glow plug connector

[bluemonster]

Have a 94 F-350 and want to check the glow plugs for resistance. The connectors at the tip are a brittle plastic and am worried about breaking them while trying to remove them. New glow plugs installed by my local Ford dealer about 8 months ago, so they have been off recently. Is there a trick to removing them safely?
I keep blowing the fuse that controls the wait to start light and think a shorted glow plug may be the culprit. Fuse blows after each turn of the key, and now they immediately blow after the truck is running if I insert one after starting. Any suggestions???

[chuckster57]

The wiring from the controller to the GP's should only carry current when the GP's are energized. If a fuse keeps blowing, I would suspect the wiring leading up to the controller first, then the controller itself.

[Gmikell]

I have the same question on removing the GP connectors as mine seem awfully tight on the GP stem too, so how are they removed without breaking them?

[chuckster57]

They pull off. If the insulation is brittle and falls apart, you can replace the ends with bullet connectors and cover with shrink tubing.

[bluemonster]

problem solved. The wiring harness for cruise control was shorting at the shift lever and was killing the fuse as it interlocks with the tranny sensor I guess. Thanks for the help.

[chuckster57]

Glad you got it fixed.

[Flipper612]

I have replaced about half of mine with female bullet connectors.

They fit just fine.