Just picked up a 72 chevy from california. Has the 402 BB.First trip out with a good sized trailer behind I was loosing power as it got warmed up.I had seen there were wire problems back at the coil hookup, so I put new wires to it,at start the 12V was there, but at run I was down to 5-6V.On my maiden trip when it was loosing power I hot wired the coil to get 12V and it helped a lot. What should the Voltage be to the coil at run, and is there a resistor wire out there available or should I go HEI and forget the problem. Thank You


Dennis M