Topic: Amp gauge reads backwards
in Forum: C3 Electrical
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My 68 has and backwards reading amp gauge, Been that way since I got it. Some one had done a bunch of work under the dash but all "looks" good -- I have checked the keyed plug to the gauge and it is correct, wires are in the female end correct. I also hooked up another gauge from my spare parts and it does the same. I have looked at the wiring dia. and not sure how this goes into and out of the bulk head / fuse box. Is it possible to have wires reversed somewhere ? Thanks, Bruce in Mt. Airy
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Sounds like the wires got crossed. Try changing them where they attach to the gage.
Brian - NCM Lifetime Member
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Lifetime MemberGreensburg, IN - USA
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My 76 did this a few times when I would be driven it. I found a wire loose (almost broken off) in the plug connector that went to the altenator. This may not be your problem but it won't hurt to look at the opposite end of the charging trail.
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Bruce....I sent ya a P/M on this.... 
Joel Adams
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Lifetime MemberGreensburg, IN - USA
Joined: 9/24/2003
Posts: 5188
Vette(s): Previous: 1984 Silver / Charcoal Coupe, 1988 Maroon Coupe / 1989 Artic White Coupe / 2001 Speedway White Roadster / Present:1976 Stingray Black / Black, Auto, 350 slightly modified (355 hp) Luxor Wires Redline Tires. / 1989 Roadster Bright Red...
Apparently Joel knows but is keeping it a secret.Maybe he is gonna start sellin advice. 
Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
[QUOTE=Tuxblacray] Apparently Joel knows but is keeping it a secret.Maybe he is gonna start sellin advice. [/QUOTE]
No.....it just happened to be a long, drawn out theory, and....he P/M'ed me aboot something else, anyway.
What I told him were:
On the '68 wiring diagram, there are two wires for the amp gauge: one black, one black w/white stripe. Both of them go to the voltage regulator for the alt. Both of them also have fuse-links in them. I suggested checking these fuse-links, as it could be the source of his problem. He also has a horn issue....there is one wire(dark green) that comes off of the v. regulator, and goes to......... wanna guess
The horns.
[/QUOTE]
No.....it just happened to be a long, drawn out theory, and....he P/M'ed me aboot something else, anyway.
What I told him were:
On the '68 wiring diagram, there are two wires for the amp gauge: one black, one black w/white stripe. Both of them go to the voltage regulator for the alt. Both of them also have fuse-links in them. I suggested checking these fuse-links, as it could be the source of his problem. He also has a horn issue....there is one wire(dark green) that comes off of the v. regulator, and goes to......... wanna guess
The horns. Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
in Forum: C3 Electrical
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