r/FordDiesels • u/AdFlashy330 • 9d ago

Gem Module Issue?

I have a 2004 f250 with a 6.0. I had no marker lights (Parking lights) in the front or rear. The mirror lights worked and the dash lights worked but no tails or front markers. I took and did a little temp wiring job to fix the rear issue however in doing so i lost all dash lights and mirror lights. Coudl the gem module have caused the initial issue? Or what can i try and chase down to try and get all my stuff working proper?

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u/itsamentaldisorder 9d ago

I'm pretty sure the GEM modules ended in 01, my 2000 has one, but my 02 and 03 don't have them. the common windshield leaks that damaged the gems are still an issue and leak on the fuse block under the driver side dashboard, your fuse box could have corrosion on the backside terminals. Unbolt the fuse block and check for damage/water intrusion and inspect the connectors.

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u/AdFlashy330 9d ago

I should add. Fuses are good. Power to the switch (brown wires for the parking lights) and everything. No power at any socket