C2 Wiring Harness
Thread Starter
Racer
Joined: Sep 2014
Posts: 425
Likes: 32
From: richmond virginia
C2 Wiring Harness
I replaced the under hood wiring harness on my 65. Everything works but the amp gauge. It completely pegs out and it ruined my gauge. I was told that the wiring harness did not include a ground wire from the voltage regulator to the horn relay. Can anyone tell me if this is correct or, if not, what my issue might be?
Thanks in advance,
Lee
Thanks in advance,
Lee
Burning Brakes
Joined: Sep 2014
Posts: 1,062
Likes: 381
From: Freehold NJ
I just replaced the harness in my '64, I used the retrofit harness from American Autowire and the instructions specifically say it does not support an ammeter - the choice was to either replace the ammeter with a volt meter or wire the ammeter yourself. I opted to go with the volt meter.
Le Mans Master
Joined: Feb 2012
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From: Western Massachusetts
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I replaced the under hood wiring harness on my 65. Everything works but the amp gauge. It completely pegs out and it ruined my gauge. I was told that the wiring harness did not include a ground wire from the voltage regulator to the horn relay. Can anyone tell me if this is correct or, if not, what my issue might be?
Thanks in advance,
Lee
Thanks in advance,
Lee
The issue appears from here as a miswired ammeter. The voltage regulator must be grounded to the chassis (battery negative) otherwise the alternator will not charge. However an ungrounded regulator will have nothing to do with the pegged and now likely smoked ammeter.
Dan
Last edited by dplotkin; Oct 16, 2024 at 03:20 PM.
Race Director
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So their wiring harness shocked your ammeter to death, giving you the opportunity to convert it to a voltmeter. Nice.
Le Mans Master
Joined: Dec 2004
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From: Pittsburgh
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I did not have that issue when I replaced my forward (Light and Engine) harnesses on my 65 Coupe from Lectric Limited Products...That would have been around 2020..
Last edited by dcamick; Oct 17, 2024 at 05:41 AM.
Burning Brakes
Joined: Mar 2011
Posts: 791
Likes: 467
From: Council Bluffs Iowa
FWIW.... I replaced all my 67 wiring with LL harness I bought last year & ammeter works as it should. And I am one of the electrical dummies on the forum. 
Thank goodness I labeled every connector when I took it apart 30 years ago.
Darin
Thank goodness I labeled every connector when I took it apart 30 years ago. Darin
