Muddling through a lot of threads and i'm a bit confused. I have a 51 GMC 150. 6V positive gound. Just got the truck and i'm trying to sort out a lot of previous owner electrical messes. He put in a ballast resister and from what i think i'm reading in the threads, i don't need, nor want this for a 6V system. Is that correct? It's very very hard to start this beast and between the reverse polarity (he had it hooked up negative ground) , backwards wired coil, no connection to generator i can't believe i got it going at all. should i remove the ballast resister that he put in?