I have a 2004 F150, new style, super cab. I'm feeling lost as my truck has started keeping the radio on after key is turned off and either or both doors are opened. I've checked out other posts and forums and can't find help. Here's what I have: radio on, pwr windows work until 10 minute battery protector relay opens. There is no door ajar, no instrument lights at all, outside keypad doesn't work, nor does the normal inside door lock buttons. The dome lights do not come on. I've pulled both threshold strips and pulled up wires on both sides, checked splices and they look fine, there is no sign of corrosion or water intrusion anywhere. The posts I see talk about the fuse box and the GEM but my model doesn't have a GEM. The fuse box is good, without me tearing it completely out, same for the splices. I'm at a loss as my childens manual is useless as it doesn't show wiring detail I think I need. When it is malfunctioning, I can pull the acc delay relay, it shuts all off as it should, put another relay in and it does malfunction again. I'm pretty confident the door switches are ok. It looks like wiring goes through a body security module, but don't know how to isolate it from anything else. I assume the BSM is located behind the rear seat back, but haven't pulled it out, yet. Yesterday the truck seemed to work ok, without any malfunctions, today, my wife goes out turns on the key to unlock doors and some of the headlights came on she noticed later. The battery was dead by the time I got home and it doesn't do that now, but it is keeping the radio on, windows operating, etc until the battery saver comes on. Sorry to run on, but wanted to give as much info as I could at this point.

 

look at the drivers front door wire harness that goes from the door into the cab pull back the black boot and you will see a big black wire that should be cut in half ive seen this alot of times and will do just what you say is doing hope this is your problem and get this fixed

 

OK, just tracking the door lock problem, didn't see a really big black wire there, just a mess of smaller ones. Wiring looks ok, but I pulled the panel up with the window and door lock switches, tested the door lock switch and it is fine, checked for the ground (black wires on the connector) and they are fine. Looks like there are two pink/stripe something wires for the lock/unlock signal feed that go out and back to the body security module according to Childens. I checked the connector to where the wires go up the c channel to the back and there is continuity. All the fuses to this module (f6, f40 and f107), I think that are supposed to have V+ at all times are good and there is V+ there.
So tomorrow, I'll try to see if the door close switches are working right. Looks like they send or not a ground to both the instrument cluster and the body security module. Any idea where to tap into these wires, easily and see if the door opening or closing is sending ground?

 

there is a black wire for ground that comes off the lock switch connector the ground for that is the driver side lower kick panel behind the hood release hadle pull that off and ohm out the black wires to that ground this wire will not break in to pieces it seperates inside the wire rubber surround you power windows use this same ground also just want to make sure that you did check the right spot there is a rubber boot that connects the door to the cab where all your wires run through to the inside of the truck im almost 100% sure as ive seen this happen many times

 

I'm relook at it, but believe it's ok. I disconnected the connector to the power door lock switch on driver's side. Connected ohm meter from connector pin of black wires to chasis ground and had continuity, telling me that wiring was intact from the switch connector to ground. I'm trying to figure out what the door close/open switches do to the BSM and instrument cluster as the Childens manual doesn't have any inter workings of the two and it shows door open/close switch wiring going to both.

 

Update. I pulled the driver's door panel off to check the door close/open switch and found it working. Also verified the black wires you mention on the door lock switch both have good grounds to chasis. In the time I had, I verified the close signal from the open/close switch is getting through door into cab and getting all the way back to the c channel where it is going to the BSM. I didn't have time to try to find the route to the instrument cluster, but will when I can.

 

Found the problem...broken wire. Took rear seat out and checked ground, it was good. Then started checking power legs and found one that was supposed to have V+ all time without power. Went to fuse (107 I think) and and double checked it, it was good. Pulled fuse and checked for power there, it was good. Then with fuse out ohmed from output side to the connector on the BSM and it was open. Hmm. It was then just a matter of tracing down where the open was. I found it on passenger side in the tray under the threshold. There was no splice involved and there was no indication of a break externally. I put in a splice, sealed and everything is back to normal. Lesson learned is, if your radio stays on after opening door/turning off ignition and the power door locks don't work, troubleshoot the power door lock problem first.

 

You happen to know the wire color, would you on that broken wire on the passenger side?