TXMike06
Member
Power never goes to the intake heater. The glow plug light on the dash doesnt come on either unless i jumper out the 2 big wires. I got 12v on one of the big lugs. The control wires power up with 12 volts when I turn the key on but it never energized the big lug that goes to the intake heater. Which tells me the contacts inside the relay are never closing. I can't find the timer relay though. I think it's all inside that black box. The 12volts on the control wires stays as long as the key is on so the timer must be inside it.