It should be INSIDE of the ECM inside of the driver's side fender. I had a 90 Dodge Ramcharger and had to modify a GM alternator (change the pulley, make a spacer) and run it for a year until I found the correct ECM. The GM alternator has an internal regulator so it'll bypass the faulty circuit in the ECM. Bolt the main power lead (from your harness/alt "plug" to the back of the GM alt where it's supposed to go. Tape off the 2 exposed leads on your harness, and jumper the Gm terminal from one to the other (make sure it's a 2 prong older GM alt). Other than that, you'll have to locate an ECM. Try Car-Part.com. I wish I could have helped more. If I have, please rate my assistance and leave a testimonial to assist others with a similar problem to locate this information, Thanks and Happy Holidays.
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bbbman78 - I.ve had this problem several times. I hadn't actually thought of swapping alternators. Sounds like this could work. (Gave ya a "Thumbs Up".) How I have done this is to cut the Field and Stator wires in the alternator harness an splice in some wires and run them to an old Ford electronic regulator that I mounted on the firewall or fender area.....same principle, but probably a little cheaper than an alternator swap. The problem I have been having with Chrysler PCMs is that everyone around here is only doing the "remove yours and send it in for repair" thing...bummer, ties up customer's vehicle for weeks!
P.S. If i owned a junkyard and had enough forethought to have een saving these things, I could be a rich man right now! LOL
I actually located one out of a dodge van that wasn't supposed to work (5.9)but I took the chance and have sold quite a few of them since without a problem. I've interchanged the 8 cyl Ramcharger, Ram van, and the Dakota...believe it or not...5.2 and 5.9 have interchanged repeatedly...without a problem.
The only problem is that it has to be taken out of a vehicle that runs and can be tested, or one with visible damage (accident/wreck etc...) as it was probably running fine when it had the collision. I have a few where I work as I've saved them for just this reason. Mwah ha ha
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