cannot find voltage regulator on my 68 - Team Camaro Tech
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post #1 of 14 (permalink) Old Jul 15th, 10, 07:14 AM Thread Starter
Roger
 
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cannot find voltage regulator on my 68

Hi Guys

Just joined and would like some advice:

I have a 68 with 396, turbo 400 and some mods - here in London.

My underhood wiring is a mess and I'm slowly trying to sort it out - but cannot find the voltage regulator?

I can find the horn relay on driver's side at back of rad support and my alternator is a 3-wire - with wires disappearing in a loom around the front of the rad to driver's side somewhere.

Is it possible there is no voltage regulator as it's built into the alternator?

Thanks
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post #2 of 14 (permalink) Old Jul 15th, 10, 07:37 AM
DjD
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Re: cannot find voltage regulator on my 68

It should be right next to the radiator on the core support on the driver (LH Drive) side of the car. There should be a grd wire attached to the regulator coming from the same place the LH Headlight is grounded to.

...Dennis

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post #3 of 14 (permalink) Old Jul 15th, 10, 07:45 AM
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Re: cannot find voltage regulator on my 68

Hi Roger and welcome to TC!
Being that it IS a 3 wire alternator and that you don't see the regulator by the horn relay then the reg is most likley built in to the alternator. The underhood wiring is rather simple really, I think I have some wiring diagrams posted on the web somewhere, I will try to find a link. My wiring was totally trashed also (rear harness still is actually). I converted my 67 to a one wire alternator and then ordered a custom harness from http://www.wiringharness.com and did a few changes to it myself to add a power lead to my radio as well as some gauges. There is also a TC sponsor that sells new harnesses, makes cleaning up the existing wiring so much easier when you start with a new custom harness.


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post #4 of 14 (permalink) Old Jul 15th, 10, 07:51 AM
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Re: cannot find voltage regulator on my 68

Roger additionally you should look at the wiring by the horn relay and see if you can tell if some if the wires have been capped and/or jumpered together.
Take a look at the third post in this thread for an example of a common method used to remove the regulator looks like and for the wire colors. There is also a link in that post to the tech reference on the conversion that might help.
https://www.camaros.net/forums/showthread.php?t=171321


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post #5 of 14 (permalink) Old Jul 15th, 10, 12:26 PM
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Re: cannot find voltage regulator on my 68

This is how you car ID your alternator. Hope it helps.

Roger

1967 Camaro SS/RS 350/295HP Coupe. First and only owner.
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post #6 of 14 (permalink) Old Jul 15th, 10, 01:36 PM
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Re: cannot find voltage regulator on my 68

If you still have the external regulated alternator then it will be on the drivers side next to radiator near the headlight area on the core support.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #7 of 14 (permalink) Old Jul 16th, 10, 03:10 AM Thread Starter
Roger
 
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Re: cannot find voltage regulator on my 68

Hi Guys

Thanks to all of you for the various tips.

I'll look again this weekend and let you know the outcome.

The alternator I.D. guide will be helpful as well.

Regards
Roger B
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post #8 of 14 (permalink) Old Jul 16th, 10, 09:13 AM
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Re: cannot find voltage regulator on my 68

Roger you can always post pics to get confirmation. We love pics, be sure to post one of the whole car too. We like to see 'em in all conditions.


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post #9 of 14 (permalink) Old Jul 21st, 10, 08:53 AM Thread Starter
Roger
 
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Re: cannot find voltage regulator on my 68

Hi Guys

Here's a photo of my alternator. Will send the car on separate post.

Looks like a 2-wire alternator??

Took out the driver's side headlight - but still cannot find the voltage regulator behind it against the front end of the rad.

Regards
Roger B
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post #10 of 14 (permalink) Old Jul 21st, 10, 08:59 AM
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Re: cannot find voltage regulator on my 68

Roger if the reg is in the default location it would be mounted right next to the horn relay, you can't miss it. I am going to assume it is not there. Post a pic of the area around the horn relay and any close ups of the wires it that area also.


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post #11 of 14 (permalink) Old Jul 21st, 10, 09:03 AM
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Re: cannot find voltage regulator on my 68

Quote:
Originally Posted by LondonUK68 View Post
Hi Guys

Here's a photo of my alternator. Will send the car on separate post.

Looks like a 2-wire alternator??

Took out the driver's side headlight - but still cannot find the voltage regulator behind it against the front end of the rad.

Regards
Roger B
It looks like it is an SI type Alternator Internal Regulated. Look at the picture that was listed above, It was a good idea in your area. Since American parts may have been hard to find.
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post #12 of 14 (permalink) Old Jul 21st, 10, 09:59 AM
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Re: cannot find voltage regulator on my 68

Trace your red and black wires, one is the ignitor wire and will come from the voltage regulator...

...Dennis

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post #13 of 14 (permalink) Old Jul 21st, 10, 10:32 AM
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Re: cannot find voltage regulator on my 68

Quote:
Originally Posted by DjD View Post
Trace your red and black wires, one is the ignitor wire and will come from the voltage regulator...
Dennis,

But if the reg was removed then the red wire would go to the battery or the horn relay or some other hot block correct?

Edit:Nevermind I was thinking of the red power lead not the other lead.


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post #14 of 14 (permalink) Old Jul 22nd, 10, 07:10 AM Thread Starter
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Re: cannot find voltage regulator on my 68

Once again thanks to all for your suggestions - yes it does look like the "SI" type internally regulated. Will check again on Sat and let you know.

Regards
Roger
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