Need input - wiring new starter

Perfromance and Technical discussions about C3 Corvettes
Post Reply
User avatar
MaineVette
Administrator
Administrator
Posts: 2024
Joined: Sep 7th, 2009 5:31 pm
Tell us about your Corvette: 1971 Coupe, restoration in progress.
Location: Waterboro, Maine

Need input - wiring new starter

Post by MaineVette » Sep 11th, 2016 10:21 am

Hey guys, hoping someone can give me a bit of insight with respect to wiring in my new high torque mini starter. My old starter was wired with the following 5 wires:

Large (+) terminal - black 2 ga wire from battery and red 12 ga wire to power the rest of the car
Large (-) terminal - black 2 ga ground wire
Small side terminal (S terminal on wiring schematic) - purple 12 ga wire - starter signal
Small side terminal (R terminal on wiring schematic) - yellow 20 ga wire - power to coil

Most of the wiring for the new starter is straightforward. However, I'm trying to figure out what to do with the yellow wire which doesn't have a home on the new starter.

As I understand it the yellow wire temporarily carries a full 12 volts to the ignition coil during cranking to facilitate easy starting. Once the car was started the coil is fed by other means and receives less voltage in order to extend the life of the coil. I presume the starter solenoid was set up to feed the yellow wire only when a signal was received from the purple wire.

I'm curious how others with a similar setup have addressed this. I suspect that, with my new MSD 6AL ignition and MSD Pro-Billet distributor (part #8572), this yellow wire is no longer relevant and can simply be cut short and abandoned.

What do you guys think?
Someday I'll finally be able to drive my Vette, but for now I'll just admire all the pieces... :willy:

Track my progress at The Corvette Restoration Page http://www.corvette-restoration.com