LS3 wiring issue, need help
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Joined: Nov 2016
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LS3 wiring issue, need help Hey all. Got an issue with the wiring on my LS3 swap in a 67 Camaro that has myself and some pretty savey techs confused, done a search here but really haven't seen an answer. The engine and management kit came from GM performance. I'm running a GM 25888970 alternator. Apparently the alternator is staying energized after we turn the car off, running the battery down if it sits a day or so. Right now it has the single orange wire from the engine harness hooked up to the L post (only wire hooked up to the 4 prong plug) and of course the battery post. Right now I have to disconnect the battery or alternator to get the alternator to unenergize, after that I can rehook it and the car will stay charged. Had the alternator tested and found nothing internal in it to cause the problem. Any ideas?
Launching!
Joined: Apr 2014
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the single wire goes from ign through a resistor (or idiot light) then to pin b on the 4 pin connector. If is connected to the battery it will keep the field energised and run the battery down. There are plenty of stickys to show this. Steve
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Another questain. It's been suggested that I dissconnect the orange wire going to the ecu and energize the alternator with a seperate 12V wire with a resistor or bulb. I'm also told it might set of the MIL. Anyone running one without the orange wire
Andrew
