apwatson50

So on my fummins I used a dodge, unknown source, voltage regulator. I actually grabbed it from a vehicle in the junk yard. Anyways the lights would pulse at night, quite annoying. Even after adding all sorts of ground wires, etc...

My fix, use a FORD external voltage regulator!

Using this diagram:

http://www.junkyardgenius.com/chargi...ges/ford01.gif

However obviously the dodge alternator does not have a stator, so I didn't use this terminal on the regulator.

I connected the field wire to the upper field terminal on the alternator. Then the lower field terminal I grounded to the body/regulator case/battery.

Started the truck, no pulsing voltage gauge, steady DVM readout initially at 14.2 volts, turned headlights on voltage dropped to 13.7 and held there steady.

FYI the ford regulator also came from the junk yard.

So that was my fix rather than the blue mopar regulator.

After I drive it for a few days I will update on how it works.

GIT-R-DONE

What year of vehicle and what kind of vehicle in specifics? Ford what ?

alex211

70s ford trucks use an external regulator.

On my buddies 77 f250 we swapped in a ford taurus 3G alternator, it is internally regulated and makes over 100 amps easy. Those alternators may be a good upgrade for externally regulated first gens. The only change we had to make was drill out one hole in the alternator for it to bolt on to the factory mounts.

apwatson50

Yeah it was just a 70's, might have been an early 80's ford truck I pulled the regulator out of.

As for the Taurus alternator, that would be interesting if the mounts were close to the cummins. I bet the hardest part would be an 8 rib pulley for it.

apwatson50

Well drove the truck last night, in the dark, and no more pulsing head lights!

So that is a good fix and I can use any parts store's regulator.

now to get a spare....

apwatson50

I had all of that, well now that I think about it the power to the VR was just through the key switch, not a relay. So there probably was a slight voltage drop. That would make sense.

Hope this helps other people though!

apwatson50

well its too late to fix my truck with the mopar regulator as I already have the ford wired in. Which gets power directly from the battery, but still uses the same switched power wire through the key. I presume to "turn it on".

50th state

to scout4bta,

How do you set up the relay you talk about in your post. I have all the grounds but still no charge