84 300SD Glow light out, won't start

[JerryBro]

Engine turns well, won't start, was working fine yesterday. Glow plug lite doesn't comes on now. Found 12v at relay, checked the 4 pin plug connector with the ignition on and didn't see 12v.

Am I looking at a bad relay? Ignition switch? Or is there a fuse hidden somewhere?

I gotta buy a book on this thing.

[jrfreeman]

Check the 80 amp fuse at the glow plug controller. It is prob. the open, if not check each GP apx. .6 ohm if #1 open You will also have no GP lite.

[JerryBro]

Fuse was ok, the relay was bad.

Jerry