Re: does anyone have a wiring diagram for the starter?
The second small wire by itself should come from the ignition switch. It supplies 12 volts to the solenoid which moves the solenoid making a contact inside to supply 12 volts from the large wire to the starter motor which turns over the engine. The movement of the solenoid also makes the starter drive engage the fly wheel.
If there is a small wire with the large one it supplies 12 volts power to the fuse panel.
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'67 Chevy C-20 short stepper - build complete, 454/SM-465.
'75 C-30 Single Cab DRW-350 small block/NP-435.
'77 GMC-6500 Dump Truck, 427 Tall Deck.
'92 GMC K-3500 Duallie, 454/4L80E.
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