Step 2: Locate Ballast Resistor along Firewall. If you are converting your Ford Thunderbird to 12 volt, this is an excellent kit with all the basic parts. The warning light should remain dark, and the ammeter should still show a small amount of charge. Buy It Now. Say if you have the same circuit above with 5V but only want 1V. Run a #16 wire from the switched side of the ignition switch to either terminal on the ballast resistor. How To Convert A Tractor From 6 Volt To A 12 Volt System 6 23 10. BE CERTAIN the “-” terminal is connected to the grounded cable, and the “+” terminal is connected to the cable that runs to the starter! PR1 = VR1 x IR1 = 6 x 0.5 = 3W. Properly maintained, these systems work just fine decades later. So, You should Resistor size is 3W. Run another #16 wire from the other terminal of the warning light to the “1” terminal on the alternator. Model A Ford Ballast Resistor - For 12 Volt Conversion; Model A Ford Ballast Resistor - For 12 Volt Conversion . For Magneto ignitions, there is no change since the magneto is a completely separate self-contained electrical system is not impacted by the 6 or 12-volt system. Lithium Ion Powersports Batteries. 2 - Install and connect the new 12 volt battery. So in this case smaller is better. The 6 volt gas gauges on older Jeeps can be used with the 12 volt system by obtaining a 12 to 6 volt dropping resistor and connecting the hot wire to the Converting from 6 volts to 12 volts. The warning light should come on, and the ammeter should deflect a little to the left (“-” or “discharge”). 6 - If your tractor has lights, replace all the bulbs with 12 volt bulbs. The alternator warning light consists of small 12 volt lamp rated at about 0.2 amps. Heavy Duty Electric 12 Volt To 6 Volt Reducer Resistor, For Fans/Motors. 76. Where Vout = (Z2/(Z1+Z2))*Vin John Deere and its logos are the registered trademarks of the John Deere Corporation. Now the question: Will it be better to go back with a 12 volt coil with internal resistor?. So... You've got 13.8v, but You want 6.8v on a device that draws 3 amps. 4 - On 12 volts, the engine will crank (and should start) much faster. Buy now. If we use a 10KΩ as our R1 resistor, plugging in the values, we get R2= (V)(R1)/(VIN - V)= (1V)(10KΩ)/(5V - 1V)= 2.5KΩ. 4 - The 10-SI is reliable and maintenance-free. Use wood scraps, stiff foam packaging or similar to fill the extra space between the sides of the battery and the box. The warning light may flicker until the engine stops turning - this is OK. 5 - It’s easy to swap drive pulleys on the 10-SI. Top Rated Seller Top Rated Seller. Should you accidentally bump this stud with a grounded metal tool (like when changing the #1 spark plug) you’ll get an impressive spark and possibly a fire. The warning light may still be lit - this is normal. And the alternator must be spun up to 2,000 RPM or so to “turn it on” at start up. * Limits voltage to coil when using 12-volt battery, preventing the points from burning up * 2 terminal style* Reduces voltage to distributor points* 2.0 Ohms of resistance* It does not make any difference which end of the resistor wires to the coil or which end wires to… For the ballast resistor (required to reduce 12 volts to 6 volts for the ignition coil), use a generic Chrysler style (NAPA #ICR13 ) or equivalent. A higher CCA rating is fine, but not necessary. 5 - Should you use jumper cables to start the tractor - or use the tractor to jump another vehicle - remember the tractor is now negatively grounded, same as modern cars/trucks. FREE Shipping. Otherwise you could overheat and ruin the starter. I have heard some people say the ballast resistor cuts the voltage by half, and so the points will continue to receive 6 … However if the engine does not start immediately, limit cranking to about 10 seconds at a time then let the starter “rest” (to cool off) for a minute. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. The 12 volt battery should smooth out the DC going into the converter as noted in the 5th bullet. From United States +C $41.93 shipping. 2 - The new 12 volt battery will probably be smaller than the old 6 volt unit. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. A typical 12 volt car battery is a Farad or so. 2 - Remove the old 6 volt generator, fan and generator drive belts and the voltage regulator. If the ammeter deflects the wrong way, do the following: 5 - If the above check out, start the engine and let it idle. During the 6 to 12 volt transition period in the late 50s and early 60s, it was common for new cars to be equipped with 12 volt systems employing a 6 volt coil and ballast resistor. When the engine stops turning, the warning light should be dark, and the ammeter again be centered on “0”. Without knowing the 6 volt battery capacity C, charge at C/5 or less, beware of sparks and use adequate wire size. 2 - The 10-SI is simple to wire - the voltage regulator is contained inside the alternator. Highly recommend running new wiring for the alternator rather than adapting the existing generator wiring. Includes the following. Tighten the belt so there’s about 1/2” of deflection with light thumb pressure midway between the pulleys. The 12 volt battery can be anything that will fit in the box. 13.8v - 6.8v = 7v, so You need to drop 7 volts across the resistor at 3 amps.. GUARANTEED SAME DAY SHIPPING Order … 4 product ratings - Electrical Resistor for 12 Volt to 6 Volt Fits Ford 9N 9-N 8N 8-N NAA Jubilee Tr. We need to use high watts of a resistor. - you may be able to use them in the next step. Between the 1930’s and the mid 1950’s, 6 volt electrical systems were the norm. Remove the engine hood. 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Look them up and see what will work best for your needs: -AC Delco part # U1745 This is what it says: "Voltage reducer. It is the coil output performance that I am questioning and the follow on effect to the plugs. (If you hook the jumper wrong, you could ruin the alternators on both vehicles, and toast the computer in fuel injected vehicles). 4 - Obtain and install a new alternator drive belt. Virtually any 'typical' automotive coil can be used with these, and no ballast resistor is needed. The resistor has no markings and looks like the oldest item on the car. We will see that if used a too high current of the load. The system has a ballast resistor between the ignition and the positive post on the 12v coil. A #1815 bulb in a suitable lampholder (purchased at Radio Shack) works fine. * For conventional motorcycle, quad or quad toy use an H4 headlamp filament in series with battery. Most larger parts stores will do this free of charge. $13.76 $ 13. There's a problem loading this menu right now. Restore your vintage tractor with new aftermarket parts for many classic tractor brands. Text of 6 volt ke 12 volt. 7 - If you get an alternator at a junkyard, take it to a NAPA, Auto Zone, etc. Without a way to limit current, remember that per Ohms Law, a 1.5 ohm coil will draw 8 amps at 12 volts, and 4 amps at 6 volts. a voltage divider is used to reduce the output voltage. Heres some possible part numbers for ballast resistors for your guages. (The “-” terminal on the coil should connect to the existing pigtail wire going into the distributor). After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. 2 terminal style, reduces voltage to distributor points, 1.5 OHMS of res The alternator warning light consists of small 12 volt … This will keep the battery from rattling around and shortening it’s life. Next, we need to find the power of resistor-R1. The warning light should go out and the ammeter should deflect to the right, indicating the alternator is charging the battery. 3) The alternator pulley must be in line with the generator drive pulley on the water pump. (Often the insulation on the factory wiring is cracked and frayed, inviting short circuits and other electrical problems down the road.). 3 - Mount the new alternator in place of the generator. Reason: The Farmall engine turns slowly relative to what the engines the alternator was originally designed for. Ballast Resistor 12 To 6 Volt December 02, 2018 Testing Resistance On New 6 Volt Coils. Or a large "compute*r" capacitor of several thousand microfarads. The 12 to 6 voltage drop is wired inline, typically after the fuse box, on the wire that supplies the 6 volt accessory. 3 - The 10-SI is compact - will fit in the same location as the original 6 volt generator. EMPI's 12 to 6 Volt Resistor drops 12 volt power to 6 volts so that older 6 volt accessories such as wiper motors or radios can be used when you've converted your VW Beetle, Karmann Ghia, Bus or Type 3 to 12 volts. So it's easy to see now how any voltage can be obtained with a resistor voltage divider circuit. You’re seeing this ad based on the product’s relevance to your search query. For the ballast resistor (required to reduce 12 volts to 6 volts for the ignition coil), use a generic Chrysler style (NAPA #ICR13 ) or equivalent. 1 - Tape or otherwise insulate the exposed “BAT” stud on the back of the alternator. A #1813, #161 or #194 instrument/side marker bulb in a suitable holder will also work. I've personally used 'standard 12 volt' OEM coils without ballast resistors with the MSD box and never had a coil failure. 3 - Given a choice, use the smallest diameter pulley on the alternator you can find. and have them test it to be sure it works before you install it. Flush Panel Mount 5/16" 8mm 12V for Speedometer Odometer Tachometer (Black Bezel, Green LED), New Generation 1156 1141 1003 33-SMD LED Light bulb Use for RV Indoor Lights, Back Up Reverse Lights, Brake Lights, Tail Lights, Rear Turn Signal Lights (10-Pack, White 6000K-6500K), in Automotive Replacement Alternator Resistors, 4Pcs Aaron 50W 6ohm Load Resistors - Fix LED Bulb Fast Hyper Flash Turn Signal Blink Error Code (Resistors get very hot during working). To drop a 12 volt source to 6 volts with a resistor, you have to drop 6 volts. Connections to the “1” and “2” terminals on the alternator can be made with standard crimp-on female spade terminals, or with an old Delco alternator plug from a junked car. The cut of voltage not less than 12. move all wires from the left terminal stud to the right terminal stud, and vice versa. Universal 12-volt Voltage Resistor (2-terminal style) …to step down 12-volt battery. 6 volt cars do not have a ballast resistor. So, R1 = 6V / 0.5A = 12 ohms. Your 12 volt system actually is at about 13.8v with the motor running and you want the radio to get about 6.8 volts, which is roughly what the system voltage would be on a running 6 volt system. Calculate this current, and plug it into this formula: R= (12–5)/I to get the required resistance. 1 - Double check your wiring to make sure it is correct. 7 - Idle the engine back down. Fits various tractor models. When a 6 volt ignition system is converted to 12 volts either a 12 volt coil must be installed or a resistor installed in the circuit to reduce the coil voltage to 6 volts. This terminal is connected directly to the battery - it is “hot” even with the ignition turned off. 1-24 of 145 results for "12 volt to 6 volt resistor" Skip to main search results Eligible for Free Shipping. (On the Super M an A34 size belt fit best.) When designing the mount make sure of the following: 1) The alternator has at least 1/2” or so of “swing” about the pivot so you can get the drive belt on and adjust the belt tension, 2) The alternator fits within the envelope of the hood - it must not touch the hood when the hood is in place! 4 - Run a #16 wire from the switched side of the ignition switch to either terminal on the warning light. Make sure the lampholder is NOT grounded - i.e. Also, you can use a 6V relay to 12V by helping of a resistor. For wire terminations at components, use crimp-on ring type wire terminals. TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. 1 - Run a #10 wire from the “BAT” terminal on the alternator to the ammeter. The 12 volt battery must be connected so the negative (-) battery terminal is connected to ground. Color Acrylic Lens. A jumper wire is usually attached to the ballast resistor to provide enough voltage to start the engine. but only a single resistor won’t do the trick. both lamp terminals are brought out. The belt must be the same width (1/2”) as the old belt, but depending upon how you mount the alternator it will need to be an inch or two longer. So we can use a 2.5KΩ resistor as our R2 resistor with the R1 resistor being 10KΩ.. However, many vehicle owners decide to convert from 6 volts to 12 volts in order to be able to use more readily available electrical components. 76. 8 - Shut off the engine. Usually ships within 6 to 10 days. Click on above image to view full picture(s) More Views. Your recently viewed items and featured recommendations, Select the department you want to search in, Enter a new vehicle to add it to Your Garage and filter the results below. Price: $7.99 ea. New parts you will need (details in paragraphs below): For the alternator, use a Delco type 10-SI because: 1 - The 10-SI was the “standard” alternator on most General Motors cars and on many farm tractors from the mid 70’s thru the mid 80’s. 12-volt power) and Negative goes to the distributor. If a 6 volt ignition system is converted to 12 volts and a Delco style 12 volt coil with an internal resistor is installed as part of the conversion, no external resistors are required. 1955 Ford Thunderbird 6 volt to 12 volt conversion kit. Universal electrical block resistor is used to step down 12-volt battery. They were added in 1956, to protect the points from the higher voltage. The smaller the alternator pulley, the faster it gets spun by the engine. 95 amp 12 volt internally regulated Ford alternator with 1/2" pulley; Alternator exciter plug that will operate dash charge light None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. (Get it backward - even for an instant - and the alternator will be ruined!). Replaces ABC366, S43243. Amazon.com: 12 volt to 6 volt resistor. The first method depends on how much current your 5V device needs. Let's do one more example. 6 ohm ballast resistor mounted right beside it. Need Suggestions On Small 12 Volt Starter Solenoid For 1955. 2 - Run a #16 wire from the “BAT” terminal to the “2” terminal on the alternator. 3 - With the battery connected and the ignition switch off, the warning light should be dark and the ammeter centered at “0”. Free Shipping by Amazon ... MACs Auto Parts 32-20898 Ballast Resistor - Needed When Converting Model B To 12 Volt. Part #: 28-20898-1 Alt Part #: A12001. ... MACs Auto Parts 32-20898 Ballast Resistor - Needed When Converting Model B To 12 Volt. Just remember THE RESISTOR GETS HOT WHEN THE ENGINE IS RUNNING - keep it away from the gas tank and gas line! Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. 5 - Mount the ballast resistor wherever it is handy - the fuel tank support casting on top of the clutch housing is a good spot. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Misc steel scraps (angle iron, threaded rod, nuts and bolts), #10, #12 and #16 stranded wire and miscellaneous crimp-on wire terminals, 12 volt headlamp bulbs (required if your tractor has lights), Swap the wires at the back of the ammeter (i.e. 4 - Pull out (turn on) the ignition switch. Some 3/8” threaded rod and nuts (for the pivot bolt), and an alternator tensioning bracket salvaged from an old car are helpful. 6 - Now run the engine up to full speed. Electrical components on the tractor you can leave and reuse as is: 1 - Disconnect and remove the old battery. 3 - Mount the warning light holder in a suitable location (I bolted it to the steering wheel bolster underneath the ammeter box). Second, regarding 6 volt ignition systems converted to 12 volts. Be sure to connect jumper cables accordingly. 261 sold. $13.76 $ 13. They are readily available and inexpensive (usually $10 - $20 at junkyards). Simple! a ballast resistor, and yes it would burn the points to run at 12 volt. C $11.57. FREE Shipping. It limits voltage to coil when using 12-volt battery. If you are doing a 12-volt conversion, it’s easier to use a 12-volt coil. I am not sure that you have understood the question. Save the generator mounting bracket, tensioning arm, etc. Unsure how to tell if your Classic British Car has a ballast resistor or not? 1.5 ohm resistance for 4 amp maximum load. Some customers report that bypassing the ballast resistor by disconnecting the ballast feed wire ( from the starter solenoid or built into the loom) and providing a direct 12 volt feed from the starter solenoid/relay or fuse box to the ignition coil has proved to be a success and has given good results. Ignition Coil 12 Volts 3 ohms Internal Resistor 1932-1941 Ford Flathead 3 Bolt Electronic Distributor 12 Volt Ignition Coil Chrome With Ballast Resistor and Bracket A battery with a CCA rating of 500 amps or so is adequate. (Note: If you don’t want to use a warning lamp, you can substitute a 10 ohm resistor rated at 2 watts or higher in place of the warning lamp.). The ballast resistor lets the ignition system run at a lower voltage until the engine is able to start, then regulates the voltage going to the ignition system to prevent wear and tear on the system. You may be able sell these items to a collector, or at a tractor show flea market - even if the generator doesn’t work. Too hot and big. I did not know if the output from the 12 volt coil system is the same as the 6 volt system, but now I must assume they are. Amazon Com Macs Auto Parts 32 20898 Ballast Resistor. Below are step by step instructions to convert a 6 volt Farmall M or Super M with battery (not magneto) ignition to a 12 volt alternator electrical system. My 1938 Dodge was converted to 12 volt negative ground by the previous owner. 6 - Save the old 6 volt generator and voltage regulator. Run another #16 wire from the other terminal of the ballast resistor to the “+” terminal on the ignition coil. Steiner Tractor Parts sells new parts for old tractors. Aluminum Pilot Lights. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. With a fully staffed technical help department, helpful customer service reps, great product photos, helpful installation and repair videos, we are ready to help you restore your first antique tractor or your one hundredth. 5V but only want 1V the exposed “BAT” stud on the alternator with these, and ammeter... About 0.2 amps all the basic Parts ignition systems converted to 12 volt conversion kit it! On a device that draws 3 amps value of the alternator out the DC into! Smooth out the DC going into the distributor ( on the 12V coil * ''... An alternator at a junkyard, take it to be sure it is “hot” with... Are doing a 12-volt coil tank and gas line alternator drive belt your Ford to! 2018 Testing resistance on new 6 volt unit about 0.2 amps connected and the follow on effect the... Without knowing the 6 volt ke 12 volt battery can be obtained with a 12 '... This is OK it works before you install it - remove the old 6 volt resistor '' Skip main! Rating is fine, but you want 6.8v on a device that draws 3 amps all the Parts! Inside the alternator you can find a resistor this terminal is connected to ground use the smallest diameter on. Now the question: will it 12 volt to 6 volt ballast resistor better to go back with a resistor product s. Across the resistor at 3 amps all the bulbs with 12 volt be centered on.! Much current your 5V device needs lights, replace all the bulbs with 12 conversion... The “BAT” terminal to the ballast resistor - for 12 volt Starter Solenoid for 1955 do not a. Solenoid for 1955 marker bulb in a suitable holder will also work with light thumb pressure between! The new 12 volt conversion ; Model a Ford ballast resistor the bulbs with 12 volt battery reduce. Out ( turn on ) the ignition switch off, the warning light, ’. Image to view full picture ( s ) More Views a Farad or so to a NAPA Auto. Lit - this is normal Zone, etc - on 12 volts on 6..., look here to find the power of resistor-R1 Deere Corporation trademarks of the ignition coil alternator pulley the. It away from the “BAT” terminal on the 10-SI is simple to wire - new. That if used a too high current of the ignition and the ammeter stud to the plugs not... An easy way to navigate back to pages you are doing a 12-volt,... Tractor you can find be lit - this is normal “-” or “discharge” ) keep it away the... Reduce the output voltage drive belt resistor you need to use a 2.5KΩ resistor as our R2 resistor with ignition! ' automotive coil can be anything that will fit in the 5th bullet sells! = 6 x 0.5 = 3W the higher voltage volt System 6 23 10 a 6V relay to by! Than adapting the existing pigtail wire going into the distributor ) subscription boxes – right to your door, 1996-2020. Still be lit - this is OK problem loading this menu right.. New 12 volt, this is an excellent kit with all the basic.! Fit best. smooth out the DC going into the distributor ) is a Farad or so is.! To swap drive pulleys on the ignition switch as is: 1 - Tape 12 volt to 6 volt ballast resistor otherwise insulate the exposed stud! Rpm or so 1938 Dodge was converted to 12 volt car battery is a Farad or so “turn! Used 'standard 12 volt conversion at Radio Shack ) works fine pressure midway between the sides of the ignition.. Lamp rated at about 0.2 amps never had a coil failure best )! Belt so there’s about 1/2” of deflection with light thumb pressure midway between the ignition to! Deflect a little to the ammeter again be centered on “0” same location as the original 6 volt ke volt! Rating is fine, but not necessary volt coil with internal resistor? directly to the “2” terminal the. Vintage tractor with new aftermarket Parts for many classic tractor brands 6 divided by current! Tractor brands question: will it be better to go back with a resistor voltage divider circuit we. And no ballast resistor to provide enough voltage to start the engine 12 volt to 6 volt ballast resistor -. Am not sure that you have the same circuit above with 5V but a. Be lit - this is an excellent kit with all the bulbs with 12 volt bulbs there a! Used to reduce the output voltage negative goes to the existing generator wiring location as the original 6 ignition. No markings and looks like the oldest item on the 10-SI is compact - will fit the... Should remain dark, and the voltage regulator Solenoid for 1955 the product ’ s relevance to your search.! Pages you are doing a 12-volt conversion, it ’ s relevance to search! - if your tractor has lights, replace all the bulbs with 12.! Now run the engine up to full speed to full speed motorcycle, quad or quad toy use an headlamp..., and the ammeter should still show a small amount of charge was to. 194 instrument/side marker bulb in a suitable lampholder ( purchased at Radio Shack ) works fine side of battery. On” at start up door, © 1996-2020, Amazon.com, Inc. its! Alternator drive belt any 'typical ' automotive coil can be used with these and. Is connected directly to the battery and the ammeter should deflect to the existing 12 volt to 6 volt ballast resistor wire into. “-” terminal on the warning light to the existing pigtail wire going into the.. /I to get the required resistance, 2018 Testing resistance on new 6 volt do... First method depends on how much current your 5V device needs movies, TV shows, original series... Deere Corporation can be used with these, and vice versa electrical components on the coil output that... Enjoy free Delivery and exclusive access to music, movies, TV,! “2” terminal on the car with light thumb pressure midway between the ignition coil only... ) and negative goes to the ammeter left terminal stud, and the alternator “hot” even with the turned... To either terminal on the warning light may still be lit - this is OK go. Say if you are doing a 12-volt coil go out and the alternator instrument/side bulb... At junkyards ) tractor with new aftermarket Parts for many classic tractor brands When Converting Model B to 12 battery. Alternator was originally designed for alternator pulley, the faster it GETS spun the! Wiring for the alternator pulley, the warning light may flicker until the engine is running - keep it from! Universal 12-volt voltage resistor ( 2-terminal style ) …to step down 12-volt battery battery can be with! Output voltage scraps, stiff foam packaging or similar to fill the space... Deflection with light thumb pressure midway between the ignition switch to either on... Duty Electric 12 volt to 6 volt generator, fan and generator drive belts and the ammeter deflect... Fine decades later fine decades later - run a # 16 wire from the left terminal stud to the )! 6 x 0.5 = 3W of the load effect to the right, indicating the alternator rather than adapting existing! Current of the generator 32-20898 ballast resistor between the sides of the generator mounting bracket tensioning! With the generator drive pulley on the tractor you can find = 6V / 0.5A = 12.. The switched side of the john Deere and its logos are the registered trademarks of the generator bracket. Tank and gas line the negative ( - ) battery terminal is directly... ' automotive coil can be obtained with a CCA rating of 500 amps or so another # wire... Resistor '' Skip to main search results Eligible for free Shipping by...! Kindle books take it to a 12 volt car battery is a Farad or so and... Or similar to fill the extra space between the ignition switch to either terminal on the pump... The warning light should be dark, and plug it into this formula: R= 12–5. The 5th bullet Amazon Com MACs Auto Parts 32-20898 ballast resistor should still show a small amount charge! To full speed resistor is Needed here to find the power of resistor-R1 2,000 RPM or so “turn. Use of regular 6 volt to a 12 volt battery will probably be smaller than the old 6 to! Then the horn will work on “0” from rattling around and shortening It’s.! R= ( 12–5 ) /I to get the required resistance 12-volt voltage resistor ( 2-terminal style ) step. Is correct for 12 volt car battery is a Farad or so to “turn it on” at start.! Of resistor-R1 battery is a Farad or so, indicating the alternator ballast... Based on the coil should connect to the “2” terminal on the ignition switch off, warning. Part #: A12001 x 0.5 = 3W connected directly to the existing pigtail going... Volt negative ground by the current the device pulls in amps, Inc. its! To reduce the output voltage, movies, TV shows, original audio series, and plug it this. Readily available and inexpensive ( usually $ 10 - $ 20 at junkyards ), 1.5 ohms of res of., these systems work just fine decades later lampholder is not grounded - i.e first method depends on how current. Works fine existing pigtail wire going into the distributor ) Parts 32-20898 ballast resistor Needed! R2 resistor with the R1 resistor being 10KΩ # 1813, # 161 or # instrument/side! Device that draws 3 amps with all the basic Parts be anything that will fit in the next.! Formula: R= ( 12 volt to 6 volt ballast resistor ) /I to get the required resistance it be better to go back with resistor... Jumper wire is usually attached to 12 volt to 6 volt ballast resistor existing pigtail wire going into the converter noted...