Subject is an 89 240 running the OG alternator. Appeared to be slowly failing as the dash lights were only coming on at idle and the battery was still getting charged. Installed a reman unit I picked up at AV and started an impressive smoke show when I touched the ground cable on the battery. Unfortunately it slipped over the post so the smoke continued till I could find some insulated pliers to pull it off. Pulled everything off and found the ground wire disintegrated, checked the rest of the wiring and all looked fine and was installed as previously. Had another reman that fit so installed that along with a new ground wire I had kicking around.
Made the final battery connection without incident and fired up the engine, all the dash lights are on and the alternator is putting out nothing. I have 12v at the main terminal, a test light grounded at the neg post on the battery lights up at the main post and not on the alt case so the ground looks ok. I don't have any voltage at the exciter wire with it disconnected and the key on, but the alt light on the dash is lit up so it has power. Only thing I haven't done is a continuity check on the exciter wire, does it make sense that I have a break between the dash light and the end of the wire or I am looking for something else?? First time I have had to do this as previous swaps just worked...
_________________ Jim
66 122S (Garage Queen) 89 244 (Hers) 90 745Ti (Mine) 89 744 (SOLD/Bought back for other daughter) 78 242GT (Project... LOL) 91 244 (Don't Ask!!)
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