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Grounding Points on an "80"

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Old 06-16-2013, 11:22 AM
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dpw21562
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Default Grounding Points on an "80"

Anybody got a diagram of the grounding points 1980 Vette.


Is there a diagram that can be posted.

Last edited by dpw21562; 06-23-2013 at 09:12 PM.
Old 06-17-2013, 09:47 AM
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Easy Mike
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The assembly instruction manual (AIM) shows all of them. There are several. Are you looking for any one in particular?
Old 06-17-2013, 07:26 PM
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Having issues with gas gauge, alt. gauge, and not charging. Any care to post a pic of the diagram.
Old 06-17-2013, 07:48 PM
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Don't have any pics but can tell you where some are.
Under the car the battery grd comes out of the box to the frame rail.
Passenger engine mount to the frame.
Antenna to the frame.
And I'm sure there's one or two more but I don't think it would affect your volt gauge....
Old 06-17-2013, 10:48 PM
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On my '74 there are also grounds from the LH #1 and #4 body mounts to the frame.
Old 06-23-2013, 09:14 PM
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[QUOTE=gcusmano74;1584182835]On my '74 there are also grounds from the LH #1 and #4 body mounts to the frame.[/QUO


Anybody got any more to share.
Old 06-23-2013, 09:28 PM
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Originally Posted by dpw21562
Anybody got a diagram of the grounding points 1980 Vette.


Is there a diagram that can be posted.
Radiator support for headlights
Rear frame for tail lights, what circuit is giving you a problem?

No diagram but here's a schematic.
http://www.vetteprojects.com/bmv/mis...tte%201980.pdf
Old 06-23-2013, 09:30 PM
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There is supposed to be a Bonding Strap on the passenger side valve cover to a stud on the firewall with the ground for the wiper motor and the blower motor. There is a large ground cable under the passenger side motor mount to the frame. There is a ground wire on the alternator mount to the main engine harness. #1 drivers side mount frame to body. Drivers side rear light harness (fuel gauge and lights) to frame next to the muffler and the antenna motor. Couple more up front for the forward light harness to the radiator core support.
Probably others I can't remember.
Old 06-23-2013, 10:03 PM
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Originally Posted by petes74ttop
Radiator support for headlights
Rear frame for tail lights, what circuit is giving you a problem?

No diagram but here's a schematic.
http://www.vetteprojects.com/bmv/mis...tte%201980.pdf
The alternator is not charging and has been tested good, also fuel gauge not working full to right.
Old 06-24-2013, 10:18 AM
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Originally Posted by dpw21562
The alternator is not charging and has been tested good, also fuel gauge not working full to right.
The fuel gauge not working full right is most likely a separate issue. I think Wilcox has a tech vid on that.

Alternator not charge but tests good??? Hmmmm. Did you try reving the engine? Most new alt. are self exciting and you need to rev the engine up to 2000 rpm.
If that doesn't work, your gonna have to chase your 3 wires down and make sure they are connected.
Old 06-25-2013, 01:31 AM
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You sure that alternator is good?
If you take a reading from the out put terminal do you get about 13.8 volts?
Old 06-25-2013, 06:06 PM
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No it only reads about 11v. I had it tested at Auto Zone and it tested good three times.
Old 06-25-2013, 09:47 PM
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Alt lamp good?
Old 06-25-2013, 10:29 PM
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Light not burnt out, gauge reads low, and multi-meter reads low. I'm lost.
Old 06-27-2013, 11:53 AM
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Any ideas on the alternator issue?
Old 06-27-2013, 12:17 PM
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Default 11 volts is not enough!

I'll take a guess that the regulator in your alternator is bad.
Try a new alternator and see if the problem is gone, if not return it and lets check the wiring.
Old 09-21-2014, 01:34 PM
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Originally Posted by Peterbuilt
I'll take a guess that the regulator in your alternator is bad.
Try a new alternator and see if the problem is gone, if not return it and lets check the wiring.

Two new alternators and have the same results. Still lost.

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