Glow Plug Solenoid

[Rock]

Hello everyone. Can someone tell me where the glow plug solenoid is located?

 

[LCAM-01XA]

Rock, it depends on what truck you have - the 6.9 trucks have it on the passenger side inner fender near the battery and the low-vacuum switch, on 7.3 trucks it lives in the back of the air intake plenum and you will have to remove the air box to see it. In both applications it looks very much like a starter relay for a gasoline Ford truck or car, only on the 7.3 trucks there's a plastic shield above it.