Missing resistance wire to coil: 470

[Eric 3.7LX Alpha 1]

Hi guys,

Converted my 1989 3.7 to a belt driven alternator recently using brackets I crafted myself. In the process I got into the engine wiring and traced everything out. I do not have the resistance wire to the coil it has constant 12v, and the coil is stamped to be used with a ballast resistor. I do have a spare coil I keep in the tool box when I go out. I can not locate the resistance wire for sale anywhere. Can a ballast resistor be used instead of the wire. If so does anyone know what one would work?

I did burn up a coil a couple years back, but for the most part it runs like a champ. I don't wanna fix what aint broken but this is kinda bothering me. Thanks all

Eric

 

[JustJason]

Re: Missing resistance wire to coil: 470

If you converted your points out then you don't need the resistor.

Yes you can use a ballast resistor if you need to. Usually you need 1.6-1.8 ohms. Just go to a Napa and ask for 1 out of a 1950's GM automobile.

 

[cedarjunki]

Re: Missing resistance wire to coil: 470

without the resistor it shortens the life of the coil and the points.

coils that say to be used with a ballast resistor, are actually only 9 volt coils, even though they are listed as 12 volt.

you can get the resistors at any parts store. most older chryslers used them... when you started the car it bypassed the resistor and supplied a full 12 volts to the coil just for more/hotter spark for easier starting...but if ran without it would eventually cause problems down the line.

1.25 ohm, 50 watt resistor. or buy a resistorless coil, and use your current one for a spare.

 

[Eric 3.7LX Alpha 1]

Re: Missing resistance wire to coil: 470

thanks for the advice.