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From what I have seen there are a couple of alternators Leece-Neville (Prestolite) and Hellas off the top of my head. The NSN is the same for them but they are made by different companies and appear nearly identical. Unfortunately their parts do not interchange. I think that was short sighted.

The first thing I did was to check voltages with a multimeter at the batteries, power wire on alternator, and exciter wire. I found that wire broken 14 gauge wire down by the starter and I repaired it first.It still did not charge per my multimeter. I took the batteries and got them replaced...

Thanks!! I just had altnator tested. Voltage was a little low then we turned it up to 27.5. Tested good under load. Now that I know that I will put it all together withe the new batteries and see what happens.

I fixed the 14 gauge wire down by the starter, it was broken. I still had no charge after that. I do not have the TM that covers the hellas alt.

I knoiw what the picture is from, maybe my question is not well written. Is the Hellas alternator which I have or do any of the 60 amp alternators require different wiring like the A3? I want to make sure what I have is wired correctly. I realize the extra wires on the A3 could go to the tach...

No Charge. I fixed the typical broken wire down by the starter. I have brand new batteries now, the old ones were 7 months old and i got them warranteed. The alternator looks brand new.

I see in the schematic there are only 3 wires. I wonder what the extras in the pic above are? Accessories? I think that Hella alternator is the bastard of them all as I havent found the TM that covers it yet. I am taking it to have it tested tomorrow and that will tell. I have 2 brand new...

My truck is a 1970. The pic I above is from one rebuilt in 2001. My alternator only has 1 power cable, 1 ground cable, and 1 small 14 gauge wire thats it.

I am wondering if someone just slapped a late model alternator on there and hoped it would work.

I have been trying to figure out my alternator issue as well as learning/absorbing as much as I can about the M35A2. I have seen a few pictures where it appears that the 60 amp alternators have 3 small wires, 1 cable to battery,and 1 cable to ground. My setup has the 2 cables but only 1 small...