voltage regulator question - Team Camaro Tech
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post #1 of 6 (permalink) Old Jun 6th, 06, 04:33 PM Thread Starter
 
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voltage regulator question

I have installed a new alternator using the old voltage regulator (external). When I put the OEM type voltage regulator (coils inside box) on, everything work just fine except I am charging at about 15 volts (seems a little high). The idiot light is also out while the car is running. I wanted to upgrade to a chrome regulator (transistor insides) and when I put it on, I am charging at about 14.2 volts at the battery and the GEN light is on dim. I can swap back to the original type and the idiot lights is out and back at 15 volts. I even looked at swapping covers on the regulator but they are different sizes. Has anyone experienced this problem? if so what did you do? Suggestions welcome!!!!
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post #2 of 6 (permalink) Old Jun 6th, 06, 07:55 PM
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Re: voltage regulator question

Do you have the ground wire on the regulator connected?





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post #3 of 6 (permalink) Old Jun 6th, 06, 11:22 PM
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Re: voltage regulator question

It's seems strange that the idiot light would come on at 14.2 volts, since that is still in the good charge range. Like Jim said, check the ground wire and make sure the regulator is grounded. There is a way to adjust the OEM regulator to lower the voltage, but check the ground first.

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post #4 of 6 (permalink) Old Jun 7th, 06, 04:32 AM
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Re: voltage regulator question

Check brown wire on the reg connector for a 67 & 69, & 70. This is the wire going back to the other side of the GEn light. Ign switch provides the one side at the GEN light.

Check the pink(?) wire for a 68 for the same.

As said, ground the chassis of reg and be sure its the same at alt case.

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post #5 of 6 (permalink) Old Jun 7th, 06, 04:58 AM Thread Starter
 
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Re: voltage regulator question

I will have to go out and check out the chrome voltage regulator today. I was thinking that the new chrome could be preventing it from grounding to the rad support. It is mounted directly to the rad support so no ground wire should be required, I would think. I will look at this today. Thanks again for hte quick replys. Will also look at wiring as suggested.
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post #6 of 6 (permalink) Old Jun 7th, 06, 05:54 AM
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Re: voltage regulator question

There is a section on external reg systems in the electrical basics sticky at the top of that forum. It includes voltage readings from a "good" ext reg system, compare those with your readings.

The 68 regulator is "supposed" to mount with 3 rubber expansion plugs, and requires a separate ground wire. Even if you through bolted it directly, it's possible to likely that you didn't get a good connection thru the new paint on the rad support. Try a voltmeter check between the reg base and the neg battery terminal, should be zero, or just put some star washers between the reg base and the rad support to ensure a good connection.

I agree it is highly odd to have the gen light on with 14 volts on the system.





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