I used that tester from Amazon and probed the red/White all the way up to where it plugs in the key and when it comes out to the key switch red,green ,white wires the the red wire has 12volts and then goes to 5volts when the key turns on
Thanks for the replies. I checked the connection and cleaned all grounds and hot wires,12volts on red/white wire all the way to right and left side panel and 7.56 volts out of the right panel on one purple wire with number 9350 has that 7.56 all the way to the left panel and out through the cab...
I have cleaned every connection, checked for voltage on all the fuses and relays and they do have same volts as the battery and still get nothing to work or light up any suggestions please
No power when I turn the key on. I have power to the key red/white wire and power on the key switch wires, but nothing lights up or beeps on either panel.