Ground Wire ?

Reply Subscribe

Thread Tools

Search this Thread

Aug 9, 2012 | 03:02 PM

marshal135

Thread Starter

Safety Car

Joined: Sep 2011

Posts: 4,103

Likes: 1,221

From: Madeira Beach, FL

2024 C8 of the Year Finalist - Unmodified

2024 C2 of the Year Finalist - Unmodified

2023 C2 of the Year Finalist - Unmodified

2020 C3 of the Year Finalist - Unmodified

Ground Wire ?

Does anyone know what the black ground wire attached to the bell housing mounting bolt on the passenger side actually grounds?
I found it loose today and was able to tighten down the 9/16"
bolt 3/4 of a turn more and snug the washer against the eyelet of wire.
It then runs up along the fire wall behind the block and becomes one with a taped grouping of wires.
Just curious as it seem like an odd place for it
Thank you in advance
Marshal

Aug 9, 2012 | 03:23 PM

KapsSA

Safety Car

Joined: Jun 2004

Posts: 4,362

Likes: 221

From: Beecher Illinois

It's part of the starter harness but it's actually the ground for the heater/AC high speed blower relay.

Aug 9, 2012 | 03:29 PM

Alan 71

Team Owner

Joined: Sep 2006

Posts: 31,170

Likes: 4,248

From: Westminster Maryland

Hi Marshal,
On my 71 it's a 14 ga. wire, and is on one of the starter mounting bolts.
The way I read the wiring diagram it grounds both the heater blower motor and the wiper motor.
Regards,
Alan

Aug 9, 2012 | 05:30 PM

Sully1882

Melting Slicks

Joined: Feb 2006

Posts: 2,092

Likes: 5

From: Fayetteville Arkansas

Quote:

Originally Posted by Alan 71

Hi Marshal,
On my 71 it's a 14 ga. wire, and is on one of the starter mounting bolts.
The way I read the wiring diagram it grounds both the heater blower motor and the wiper motor.
Regards,
Alan

right on as always!

Sully

Aug 9, 2012 | 06:14 PM

Alan 71

Team Owner

Joined: Sep 2006

Posts: 31,170

Likes: 4,248

From: Westminster Maryland

Hi Sully,
Thanks!
SO often the answer is in the AIM.
Regards,
Alan

Aug 10, 2012 | 12:39 AM

7T1vette

Team Owner

Joined: Jan 2006

Posts: 37,637

Likes: 3,114

From: Crossville TN

Well, that wire only becomes a "ground" if the main ground wire between the frame and engine (at the right motor mount) is in place and functional.

Aug 10, 2012 | 08:14 AM

marshal135

Thread Starter

Safety Car

Joined: Sep 2011

Posts: 4,103

Likes: 1,221

From: Madeira Beach, FL

2024 C8 of the Year Finalist - Unmodified

2024 C2 of the Year Finalist - Unmodified

2023 C2 of the Year Finalist - Unmodified

2020 C3 of the Year Finalist - Unmodified

Gentlemen,
Thank you for your responses.
I guess I need to become one with my AIM.
Thanks for the prompt answers.
This forum is my AIM.

I hope as I grow in my C-3 experience I can answer these
kinda qustions for the next generation.
Now, I don't have to worry about my wiper or fan switches cutting in/out.
Alan, I know you have a picture of this wire

So in 71, they attached it via a starter mounting bolt.
Interesting? Wonder why they would move it?
Marshal

Aug 10, 2012 | 12:49 PM

7T1vette

Team Owner

Joined: Jan 2006

Posts: 37,637

Likes: 3,114

From: Crossville TN

So....if you are having problems with intermittant grounding, did you check the integrity of the main engine/frame ground wire?

P.S. The knowledge on this forum is vast--but, with every picture being worth '1000 words', the AIM has LOTS more information in it than what folks can type into any given thread. Buy an AIM. It's the best investment any C3 owner who DIY's can make.

Last edited by 7T1vette; Aug 10, 2012 at 12:53 PM.