Which ecm and alternator wiring?
#1
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I have a 05 5.3 with 2 wire alternator with generator battery contol module. Lt1swap.com shows to wire the alternator like a 04 brn to pin 15 and gray to pin 75 but alldata online wiring diagrams shows for a 04 pin 15 is generator field duty cycle signal and pin 75 is charge indicator control opposite of what lt1swap shows and some other diagrams ive seen which would be right? I do not have a ecm yet do I need to buy a 05 or a 04 ecm or would it matter as long as I get a blue green ecm also what vehicle should I load onto it 05 5.3 truck since thats what the motor is out of or do a 04 because I am deleting the GBCM and possible the pinout is differant or is alldata wrong?
#2
TECH Fanatic
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lt1swaps.com pinout chart does indicate that the PCM needs to be programed for the deletion of the GBCM. I have used Brendans PCM in a previous generation of my car. It does work.