CRG Discussion Forum

Camaro Research Group Discussion => General Discussion => Topic started by: Chuck-68-Cam on July 04, 2022, 03:02:38 PM

Title: Voltage Regulator Missing?
Post by: Chuck-68-Cam on July 04, 2022, 03:02:38 PM

68 Camaro, 350, th400

I can't seem to find the voltage regulator. There is a coolant bottle where it should be and it no where in that area. I can't even find the harness connector. Alternator only has output post. Any ideas? Can the system work without it? Would HEI conversion have anything to do with it?

Thanks for any assistance.

Title: Re: Voltage Regulator Missing?
Post by: Richard 302 on July 04, 2022, 04:00:36 PM

Is the horn relay still there?

Title: Re: Voltage Regulator Missing?
Post by: bertfam on July 04, 2022, 05:11:44 PM

Sounds like you have an aftermarket "one wire" alternator. Post a picture of it.

Ed

Title: Re: Voltage Regulator Missing?
Post by: Chuck-68-Cam on July 04, 2022, 06:01:57 PM

Yes, horn reply is still there.

Alternator is a Napa (I think) 213-4011SW So running without a regulator is a thing? Here are some pics.

Title: Re: Voltage Regulator Missing?
Post by: bertfam on July 04, 2022, 06:30:06 PM

Yep. That's a "one-wire" (self exciting) alternator. They don't use external regulators.

Ed

Title: Re: Voltage Regulator Missing?
Post by: Chuck-68-Cam on July 04, 2022, 06:39:06 PM

I'll be dammed. Never heard of that before. Was going nuts trying to find something somewhere. I know that without regulator you can get voltage spikes that are not good for wiring.

Thanks for the heads up.

Title: Re: Voltage Regulator Missing?
Post by: David K on July 04, 2022, 07:41:00 PM

The original style wiring had a plug that would be where that black rectangular plug is.

Title: Re: Voltage Regulator Missing?
Post by: Chuck-68-Cam on July 04, 2022, 07:48:33 PM

Quote from: David K on July 04, 2022, 07:41:00 PM

The original style wiring had a plug that would where that black rectangular plug is.

I thought original was a regulator on the rad support.?

Title: Re: Voltage Regulator Missing?
Post by: Everett#2390 on July 04, 2022, 08:12:02 PM

You are correct, Chuck.  OE design has the VR next to the washer fluid bottle. and driver side headlamp.

Title: Re: Voltage Regulator Missing?
Post by: KurtS on July 05, 2022, 05:04:55 PM

They moved the regulator onto the alternator in the 70's, IIRC.
This is just one of those newer style alternators.

Title: Re: Voltage Regulator Missing?
Post by: 169INDY on July 05, 2022, 11:28:55 PM

https://www.americanautowire.com/view-faq/how-to-identify-your-gm-internally-regulated-alternator/

Title: Re: Voltage Regulator Missing?
Post by: Chuck-68-Cam on July 06, 2022, 12:07:45 AM

Thanks Indy, but does that apply to this one? The ones on that link all have spade connectors on the back. Or am I missing something.

Title: Re: Voltage Regulator Missing?
Post by: bertfam on July 06, 2022, 12:46:51 AM

Quote

Thanks Indy, but does that apply to this one? The ones on that link all have spade connectors on the back.

That's because you have a 10SI alternator that's been, as I stated above, converted to a one wire, self exciting, internally regulated alternator. The wire connector on your alternator isn't required so it's been hidden by that black plastic cover (see below).

Ed

Title: Re: Voltage Regulator Missing?
Post by: Chuck-68-Cam on July 06, 2022, 01:18:18 AM

Okay, nice. Thanks again. Now that I've got answer on this, off to many more...lol

Title: Re: Voltage Regulator Missing?
Post by: 169INDY on July 06, 2022, 01:21:23 AM

Good Point.^^