Wouldnt this fry the ecu? I mean sending a positive to the ac1?
Is it also ok to use voltage light first before connecting and opt not use a bulb?
Update:
I checked the line again, ac1 is sending out ground signal. I used tester 12v and ac1, ac1 is sending negative.
What does this mean? What should I send to ac1? Should i get an A/c diode tap to positive going to qc1(-)?
Apologies for all the questions. Thank you so much for all the help