Re: Ballast Resistor (1 Viewer)

[oxpitot]

I went through something like that with my 71 FJ40. It has an internal resistor in the coil. When I first got it running it would burn up the points within about 15 minutes (rough running, then backfiring, loss of power, then a sudden eerie silence). I was told to use a GM external resistor for trouble shooting, and that worked fine as a temporary measure.

I think any ballast that drops the voltage to around 8-10 volts across the points will do. Don't try running long without any resistor or you will burn your points, and they are rather annoying to change.

 

[thorvald]

so a 71 shouldnt need a resistor then? when I did my rewiring I didnt come across one, must be in the coil.

 

[toddslater]

here is a pic of the ballast resistor on my 73. I wasn't aware that the earlier coils had them built in...need to do some digging.

 

[Brog]

For what it is worth;
My '67 has an external resistor.
Brog