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Turns out you don’t need that little orange wire. The eBay alternator is working. Getting about 28.5v across both batteries. Nothing has caught on fire yet.

I checked the wiring diagram for the diagnostic system and it was on there. I just want to make sure it won’t fry something if I don’t plug it in. Thank you for your help!

Is this little orange wire necessary? I think it goes to the diagnostics system. Mine is frayed off next to the fusible link, and I’m wondering whether I should replace it or just cut it off and cap it.

Okay, sweet! Thank you for the quick response I really appreciate it! Can you possibly direct me towards a wiring diagram so I can go through everything on the truck side before I install this alternator?

My eBay alternator came in and it doesn’t have this little capacitor. Does anyone know how to test one and see if it’s any good? I swapped the spacer, fan and pulley onto the new alternator already.

The batteries are still in series so I assume the whole system is still 24v.

I went ahead and ordered an eBay unit. I might send this one off and have it rebuilt at a shop if it is cost effective to do so. I’m trying to figure out how to wire up the passenger side alternator now because I wasn’t the one to take it off and I bought it without it mounted, so I don’t really...

I got the alternator out of the box it shipped in and opened it up. It looks like it was wayyy overloaded or it shorted out. Either way, I’m going to order one off of eBay and then have this one rebuilt at a shop. Some of the windings look cooked. I need to figure out what caused this before I...

That’s good to know. I guess keep it in this location so I can gather information, and whether or not I decide to rebuild it will determine if I make a new thread in the parts wanted section. I appreciate your help sir.

I’ve rebuilt a few other Delco Remys that came on airplanes, but I wasn’t sure if these CUCV alternators had any specific information I should know about besides the isolated ground. I’d like to get it done by next Saturday, March 2nd. Today is Feb 22nd, so that gives me 8 days. I’m debating on...

I would appreciate that if you think it would help. I’m looking for both advice and potentially parts.

So I need to either rebuild or replace my passenger side alternator on my M1031. Can I still buy an OE Delco-Remy alternator anywhere, or should I just rebuild it. Can anyone recommend a good replacement alternator and a good quality complete rebuild kit? I guess it doesn’t matter if it’s an...