Can anyone tell me what pin the alternator charge light wire goses to in the ecu pins of the hash harness I'm switching to ms3 pro and will need to uses the charge light to turn on and off the alternator this is for a ls sway car but the chassis harness is still stock. I can I can just run this wire to a switched 12v wire with a restorer but would like to have the light working thanks

 

I don't think it goes to the ecu
It goes to one of the pins on the two pin connector for the Alt

Someone can correct me.