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Old 04-22-2019, 10:29 AM   #33
jquinlan
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Join Date: Aug 2018
Location: Foley, Al
Posts: 142
Default Re: New Battery shut off switch, now ammeter is strange

Quote:
Originally Posted by Badpuppy View Post
The CCA of any battery takes a nosedive over the years. Starter motor draws it way down so it's harder to charge up again. A new battery is probably in order, but as long as it starts the car and you don't mind the needle pegging you can probably procrastinate a while. But if you have a 60-amp alternator, the wiring through the ammeter to the battery may be getting a bit warm. The 12 gauge wire in those harnesses is rated at only 20 amps.

In my coupe I found the ammeter wires are only 16 gauge, like the rest of the car (=10A). I should replace them with #10 for my 30A alternator. Maybe one day.
This has been an interesting thread and I learned a few things. Thanks again for all the good info.
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