I've got a 84 diesel pup, and I'm getting 6 volts to the glow plug bus bar, but only for about 1 second, then it shuts off, no matter whether the engine is hot or cold. I believe the problem is in the glow plug controller, and the only place I can get one of those is thru the dealer and they want $125 for it.
Is there a way to bypass the controller and run the glow plugs manually without burning them out?

any help here would be greatly appreciated

thanx

1984 Isuzu p'up 2.2L diesel -in rehab
Warn lockers