ok. I did convert from 6v to 12v. after everything cooled down and the battery recharged, i reconnected everything and the truck started. I took readings out on the ballast resistor and there were 10vdc going to the coil and 10vdc coming from the coil to the distributor. Could it be that the ballast resistor is going bad. i have no other wires. I have wire from ignition switch to input of ballast resistor out put to coil and coil to distributor. THis is on a 235 chevy by the way.
