O1 f350 electrical problems

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Apr 16, 2026 | 01:40 PM

Joekazz

Thread Starter

1st Gear

Joined: Apr 2026

Posts: 1

Likes: 0

O1 f350 electrical problems

Hopefully some one has some insight for me. Back in October of last year I lost tail lights -instrument cluster and radio illumination lights minus the various warning lights.At the time I asked around a few Facebook groups and I got the suggestion that it was my gem module well seeing as how it’s my farm slash beater pickup I just left it now fast forward to a few days ago I went out to start it and as soon as I open the door I could hear a clicking under the dash on the drivers side as soon as I turned the key the clicking went away but there is no power to anything. I unhooked the batteries and pulled the gem-fuse box out and found some very slight corrosion on a few terminals on the 2 big main plugs that go to the fuse box. Any suggestions where to look or go next? TIA

Apr 25, 2026 | 05:15 PM

green97ss

8th Gear

Joined: Mar 2026

Posts: 8

Likes: 4

Did you check all your fuses? I assume so, but it doesn't hurt to ask. I'm just a shade tree mechanic, but I would get my volt meter and a wiring diagram and try to trace the wires to see where it is losing voltage.