Hey guys!

I've used search to try to get to the bottom of this common issue, but I am still unable to resolve my issue.

I converted my '69 Super Bee to the 70 and up dual field alternator and electronic voltage regulator.

I am having an issue where the alternator appears to be over charging. Like 13.5V-14.5V at 650 idle and then 15.5V+ as RPMs climb. Im happy with the idle performance, but am worried about the 15+ volts!

I have checked what I believe are the common issues. I have:

1. Tried multiple voltage regulators (3).
2. Grounded the regulator straight to the battery -.
3. Switched the 12V keyed source on the regulator and alternator field wire to a wire going straight to the battery +.
4. The green field wire from regulator is new and not unintentionally grounded.
5. Tried running with regulator disconnected, and all charging stops.

As an FYI (and because it could somehow be related), the alternator output wire is new, and I have done an ammeter bypass, and headlight relay conversions. I had upgraded to a Toyota Denso alternator, but accidentally fried it. I cant afford a replacement, so Im putting my old stuff back on.

The battery is probably pretty dead... I've been starting and running it without the alternator working at least 20-30 and more times... could the battery being really depleted cause the alternator to output more than 14.5 volts to try to charge the battery?

Thanks for any help!

alternator output will vary based on temperature as well but it typically is higher with lower temps. I suspect the alternator is bad. Can you have it tested?

Slow charge the battery at a low amp rate overnight till its topped off & see what your charging voltage is then