AKTikki
New Member
I have a 1998 GMC Sierra 2500 that I'm putting back together. When I put the motor in I noticed that the glow plug wiring was missing on this. I yanked the wiring out of my 94 and can't find where the fifth wire on the driver side set of glow plugs connects into the system. From the wiring diagrams I see that the orange wire goes into a dark blue wire I can't find that anywhere though. If someone who owns in 97 and above could take a picture under the hood where that wire ties into the system I would really appreciate it as it would eliminate trying to search through the entire wire loom.