Is the external resistor on a 53 mounted on the fire wall? I get 12 v with the key on there and at the coil. It is my understanding that the other wire to + side of coil gives it a 12 v boost while the starter is engaged to help because the starter draws so heavy. I get 0 v volts at the wire from starter solanoid to coil with just key on so I think I'm right. I have a new 12 v coil no ext. resistor req. laying around. can I bypass the resistor and use it. or I'm I way off base?