MaxouGT4

Good to know! Thank you very much!

This what I thought! I wasn't sure. And if i understand correctly, the Ignition outputs should be battery/alternator voltage correct or it's again regulated? I will switch back to ground. Thank you!

Hi, I have a my fuel pump relay (30 amps) that received a 12v signal from my TST205+ on Aux Output 7 (original fuel pump signal but not on ground anymore). If I test the voltage when the car is at "On"/not running and without relay I read 11.75V. If I back prob the terminal of the relay when the relay is plug I get 0.5V. If i remove the terminal from the ecu and try a direct 12.6V it works. Is it a normal behavior? I guess I could just change my signal to be a ground again a give my 86 pin of a my relay a 12v with a 2amps fuse but I'm wondering if it's normal. I've check the ground for the ecu and relay and I don't have any resistance. And what is the difference between Aux Output and Ign Output anyway? Thank you!