HELP Possessed Truck!!!!

[STLstroker]

This is gonna sound crazy. My horn randomly turned on in the morning and it sounded like someone was just holding the horn down. I figured out that if the dome light inside the cab was on the horn would stop. Any time i turned off the light the horn would start going again. Next i got the horn to stop and later that night my Gf come to my house and says my radio is on. Thats funny my keys are in my pocket. Go outside the radio is going on and off, windshield wipers are going on and off still with the ingnition at the off setting and my keys still in my pocket. I disconnected the batteries to stop all the nonsense. My batteries are reading 12V after testing them, yet it struggles to turn over. I hear a clicking sound by all the electrics like u would hear a computer modem in ur house. Just a clicking sound like a computer was trying to work. ANY SUGGESTIONS? I am guessing my PCU burned out possibly, but am not sure at all. Any help would be great otherwise i have a nice big paper weight in my driveway

[bjkalma]

Not sure if this will help, but I have had a lot of problems switches, relays, sensors, and electrical motors. Found out recently that the G.E.M (generic electrical module) is most likely the root of the problem. If this doesnt help then at least its a Bump.

[Slayer13]

have your batteries load tested. not just a voltage reading. use a load test. bet they're bad.

[STLstroker]

1) where is the GEM and how can i test it?

2) To Load test do i take them out and take it to the store or is there a setting on the volt meter i can use?

[bjkalma]

The GEM is bolted on the fwd side of the in cab fuse panel. i dont know how or if you can test it I am going to take mine in to see if the dealer can test it.
Take the batteries to an auto parts store and they should test them for free. If they are bad I would reccomend spending the extra on high quality batteries(Interstate or better)

[STLstroker]

I got high quality batteries. made sure of that. Ive also heard of early 99 fords having windshield leakage right onto the module causing hell. You heard of that before. I thoght it was an interesting theory. That would make sense seeing my truck started doing this in a thunderstorm

[Ryan Rønning]

Originally Posted by STLstroker

I got high quality batteries. made sure of that. Ive also heard of early 99 fords having windshield leakage right onto the module causing hell. You heard of that before. I thoght it was an interesting theory. That would make sense seeing my truck started doing this in a thunderstorm

There have been a few trucks out there that have done that.

Like was said get those batteries tested out. When batts start to go they can cause all sorts of weird stuff to happen.

[STLstroker]

where exactly is the Generic Electric Module? More details or possible picture would be nice. Looking in the cab by the fuse box and am hearing a lot of buzzing and clicking sounds. something is going on under by all the electric. truck is not even on and still got sounds coming from under the dash

[STLstroker]

bump Help please

[STLstroker]

Got my batteries charged up again and my truck lives again....for now. I fear when it rains next time. So should i check for leaks and i still havn't figured out where the GEM (generic electric module) is yet.