I have a 2008 F450 and I'm looking for ideas on what you guys may think may be going on with my truck. In the past the truck would blow the fuse for the door locks. Currently the display is showing wiring fault with no trailer attached, the horn is not working and the cruise control has stopped working. I've covered the basics and checked all relays and fuses and haven't found a faulty one yet. I'm thinking bad ground or possibly bad GEM module???? I've read and read topics and am more confused as to what it could be now than when I started. Any help is appreciated

 

Are we supposed to just guess what you're working on?

 

Its a start!

$100 Monopoly dollars on a 2009 F250

 

HA yea I guess that would be useful, I edited my original post it's a 08 F450