63 wiring diagram

[Steve D.]

On all of the 63 wiring diagarams I have seen, a single pink wire is shown to go from the top of the ballast resistor to the coil and then from the coil to the solenoid. But in all of the wiring harnesses I have seen, there is a double pink wire connected at the ballast resistor with one wire going to the coil and the other going to the solenoid. Is the electrical result the same? I was just curious why the diagrams show two wires at the coil instead of at the resistor.

[John H.]

Re: 63 wiring diagram

On all of the 63 wiring diagarams I have seen, a single pink wire is shown to go from the top of the ballast resistor to the coil and then from the coil to the solenoid. But in all of the wiring harnesses I have seen, there is a double pink wire connected at the ballast resistor with one wire going to the coil and the other going to the solenoid. Is the electrical result the same? I was just curious why the diagrams show two wires at the coil instead of at the resistor.

Steve -

Yes, the result is the same - don't know why those harnesses aren't made to the print.

[William C.]

Re: 63 wiring diagram

the wire from the resistor feeds the coil once the key has been released via the ballast resistor at a reduced voltage to make the points last longer. The wire from the solenoid is only activated during cranking to provide a hotter spark for easier starting.

[Richard M.]

Re: 63 wiring diagram

I'd bet to save several inches of wire to get up into the coil........time tens of thousands of cars, equals some $.

[William C.]

Re: 63 wiring diagram

With all due respect, it had nothing to do with it. Feeding off the solenoid is just an easy way to bypass the ballast resistor during cranking for a hotter spark. All Gm cars were setup that way, Just one of the way GM cars had a reputation as being easy to start in all weather during cranking..

[Steve D.]

Re: 63 wiring diagram

Thanks everybody