Battery light - dash/volt gauge
Thread Starter
Instructor
Joined: Oct 1999
Posts: 208
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From: Fl
Battery light - dash/volt gauge
Had my 82 on a battery maintainer/charger most of the winter. When took it off, car starts, battery seems strong, however the dash battery red light stays on and the volt gauge is only on about 12. Could this have overcharged the battery or maybe the guage and light are bad. Both worked fine before. I had also put the trickle charger on last winter, no problems. Still starts and runs fine. Ideas?
Thread Starter
Instructor
Joined: Oct 1999
Posts: 208
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From: Fl
Battery light
Fuses are ok. Did check the battery and alternator yesterday. Battery shows about 12.3 and the alternator about 12.3 to .4. Guess the light goes on when the alternator is bad. Not sure if it was the orig. Replace it asap.
Race Director
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From: Dayton, Ohio
The brown wire exciter circuit could be your problem.
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Thread Starter
Instructor
Joined: Oct 1999
Posts: 208
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From: Fl
battery light
Took off my alternator to have tested and it shows 70amp, looking in the specs 82 had 63 amp for all but Collector Edition (CE) CE had 70, I have a CE. Any problems with putting in an 85 amp altenator? Would this hurt anything? Many of the catalogs show 63, 70 or 85, even higher for 82.
Melting Slicks
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From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
2023 C8 of the Year Finalist - Unmodified
Took off my alternator to have tested and it shows 70amp, looking in the specs 82 had 63 amp for all but Collector Edition (CE) CE had 70, I have a CE. Any problems with putting in an 85 amp altenator? Would this hurt anything? Many of the catalogs show 63, 70 or 85, even higher for 82.
Last edited by BPHORSEGUY; Mar 5, 2011 at 06:52 PM.
Thread Starter
Instructor
Joined: Oct 1999
Posts: 208
Likes: 0
From: Fl
Battery light
Alternator only test at home 12.3 or so, when I took it to the store it tested on the machine at 11.58. The 70 amp was what was on the alternator case, but come to find out on a rebuilt one the case could show 70amp but the alternator is rated at 85. I also had them test the new one I got and it tested at 15. After putting a new alternator on my volt meter gauge showed about 14 plus and the battery light went out.
Melting Slicks
Joined: Jul 2010
Posts: 2,762
Likes: 820
From: SUFFIELD CT USA 2023 C8 CORVETTE UN-MODIFIED FINALIST
2023 C8 of the Year Finalist - Unmodified
I am glad to hear you got it sorted out, I hate electrical issues! 
The new one shows 70 amp on the case
because they re-wound someones old core, the guts are up rated though!
The new one shows 70 amp on the casebecause they re-wound someones old core, the guts are up rated though!
Last edited by BPHORSEGUY; Mar 6, 2011 at 11:12 AM. Reason: add
