Mopar P-3690732 Constant Voltage Regulator

[Houle #382]

What are the pros and cons of running the Mopar P-3690732 constant voltage regulator on a street car with the Mopar electronic ignition, I heard without it running the electronic ignition you could burn out the control box then I heard you could boil your battery. Mopar claims race only, has anyone run this regulator on the street, if so any issues ?

 

[SDCoronet]

Many years ago when I installed the Mopar electronic ignition kit and I dutifully used that regulator because the instructions told me so. It gave me many years of trouble free, daily driver use before it died and then I replaced it with the same one. I saw no downsides to using it, and that reminds me Ive been meaning to buy another one as a spare.

 

[gooser]

i used it in 3 different cars all with no trouble at all

 

[451Mopar]

No issues using it on two 1968 vehicles.
I prefer the later style that regulates the ground side field winding, but then you need to use a newer style alternator too.

 

[Houle #382]

No issues using it on two 1968 vehicles.
I prefer the later style that regulates the ground side field winding, but then you need to use a newer style alternator too.

Which one is the later style ? The P-3690732 ?

 

[451Mopar]

I was refering to the later style of alternator and regulator like used on the '70 and newer cars.
The earlier cars that originally have the points type regulator, regulates on the power to the alternator field winding, and the ground side field winding is grounded to the alternator case, thus the single field winding connection at the alternator compared the the late two field connections on the 70 and up alternators that use the electronic voltage regulator that controls the field current on the ground side.

Anyhow, the constant voltage regulator (blue box) is good (at least where temperatures are 100-degrees and below.) The part with the constant voltage is that it does not change the alternator output depending on the ambient temperature.

 

[Fran Blacker]

Battery life is my only concern, seemed to me they had a shorter life. No proof. Removed them went to OEM look electronic with a fuse inline.

 

[66Satellite47]

The P3690732 has worked fine for me on the street. But my drives are not very long in distance(50-60 miles) or duration (2-3 hrs). Swapped one out, turned out to be the alternator.

 

[Daves69]

From the DC Race Dist kit if it helps....

 

[Houle #382]

From the DC Race Dist kit if it helps....
View attachment 991730
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Thanks, this really clears up a lot of questions.