Looks like your trying to do manual setup,
Use the ground ran to a switch to initiate the relay. Leave it on the ground connector. Wire the 12v batt side to the signal stud looks like you did. Then the other big stud goes to the glow plugs.
If that is how you have it setup and you still have problems, does the relay work? No: get new relay; You'll hear it click on when you turn it on and click off when ya tell it. If yes, clean any corrosion, check the wiring harness to the plugs. Nearby is a spot that likes to melt and eventually short.
A volt meter or continuity tester can come in handy here too
Whats wrong with this GP setup?
Can you explain it to me? The wires in your pic don't seem to correspond to my setup, either in color or placementEverything.
Can you explain it to me? The wires in your pic don't seem to correspond to my setup, either in color or placement
Actually there is no controller in the head. This is a reman 6.9. The controller port is plugged off. The old controller in the previous engine didn't work and the PO wired it for manual GP's anyway.That's because the controller Oldbull88 posted is the 87 and later solid state connector. You have the 83-86 latching relay with the controller screwed into the head. I can't tell you where things are supposed to be on the 83-86 relay because I was so scared of that thing failing I tossed it soon after I got the truck. First I ran manual glow plugs and once I got all the other issues my inexperience had caused out of the way it worked superbly, then because I occasionally lend the truck out and have others work on it also, I converted to the 87+ system Oldbull posted which also has worked superbly well. Listen to these other guys; the older system is meant for a manual conversion, but don't glow your plugs more than 8 seconds or so unless you have converted to a dual coil self limiting style plug or a 12 volt rated plug such as the ones used in the "slow glow" early 5.7 Oldsmobile diesels.