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Topic: 1968 Vette Battery Won't Charge

in Forum: C3 Electrical

1968 Vette Battery Won't Charge (1/3)
 8/13/20 11:14am
fivejah
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Auburn, WA - USA

Vette(s):
1968 Corvette 454ci 4 speed


Joined: 8/8/2020
Posts: 7

The new battery on my 1968 Vette will not charge.  Alternator checks out fine.  Any ideas on where I can begin to look to find the issue?  Thanks!

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Re: 1968 Vette Battery Won't Charge (2/3)
 8/13/20 2:36pm
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.


Joined: 7/9/2003
Posts: 635

Have you checked the voltage at the battery to see if it increases after you start the car? If the voltage regulator and alternator are functioning properly, it should jump up a volt or two. How much depends on the state of the battery charge.



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1973 L-82 4 spd

Re: 1968 Vette Battery Won't Charge (3/3)
 8/13/20 9:52pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

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


Joined: 11/8/2003
Posts: 19733

Does the amp gauge show a positive reading or not? The older cars run the charging voltage thru the gauge from the alternator. If the gauge is not working right, or is defective, the battery will not charge.

Check voltage(engine running) at the rear of the alternator, then at the horn relay on the driver side inner fenderwell, and finally at the battery. If you have 14+ volts at the alt, and horn relay, but not at the battery, I'd be looking at the gauge.



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