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don t. - 72gmc · 07-30-2023, 04:00 PM

1970 GMC BB TH400. C2500 if it matters.

It's been sitting for a good many years. Decided I'd clean up the electrical connections on the starter while I was down that way. Ran into a few issues.

1 - All 3 wires near the starter should be R&Red due to dry rot.
Batt cable is a no brainer. The yellow wire will not be replaced as I have HEI. Anyone know the gauge of the purple wire? Looks like 14ga to me but??? Just for grins, if I was replacing the yellow wire, what gauge?

2 - All 3 connections ended up rotating the stud of the solenoid.
Time for a new solenoid or would you just snug them back down?

3 - Following the purple/yellow wire back to the firewall was covered in tape. Aint no easy way to get tape in many areas along the path.
Suggestions appreciated.

Thanks much...Don.

07-30-2023, 04:00 PM	#1
don t. - 72gmc Registered User Join Date: Dec 2001 Location: harvard, il. USA Posts: 389	Starters 1970 GMC BB TH400. C2500 if it matters. It's been sitting for a good many years. Decided I'd clean up the electrical connections on the starter while I was down that way. Ran into a few issues. 1 - All 3 wires near the starter should be R&Red due to dry rot. Batt cable is a no brainer. The yellow wire will not be replaced as I have HEI. Anyone know the gauge of the purple wire? Looks like 14ga to me but??? Just for grins, if I was replacing the yellow wire, what gauge? 2 - All 3 connections ended up rotating the stud of the solenoid. Time for a new solenoid or would you just snug them back down? 3 - Following the purple/yellow wire back to the firewall was covered in tape. Aint no easy way to get tape in many areas along the path. Suggestions appreciated. Thanks much...Don.