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Chris (aka- Moose)
Chris (aka- Moose), Technician
Category: Ford
Satisfied Customers: 48726
Experience:  16 years experience
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06 f150 I miss wired a 7pin trailer connector, now my radio,

Customer Question

06 f150 I miss wired a 7pin trailer connector, now my radio, instrument panel lights and windows will not work. I have replaced all blown fuses, but fuse #6 (Parking lamps, BSM, and instrument panel) keeps blowing every time I turn on the lights. I have disconnected front and rear lights, instrument panel, and BSM, but it still blows. Any Ideas?
Submitted: 2 years ago.
Category: Ford
Expert:  Chris (aka- Moose) replied 2 years ago.
HICan you go into detail on how you were trying to wire the 7 pin connector in and where it went wrong?Unplug the head light switch. Run a wire from the battery to the headlight switch connector with a 15 amp fuse in line. Touch it to pins 4 then to 5 and let me know which circuit blows the fuse. Below is a connector diagram. It may take me 1-2-3-etc... responses to get the information I need resulting in giving you the answer you need. I can't read minds nor have a magic wand, & I'm not there to see, smell, feel, or hear so I need good information to return a good answer. My normal hours online are 3pm-3am. There are 2 services your receiving 1: from Just Answer whom has already collected the deposit/question value 2: from me (not an employee of the website & have no control over anything except what I type.) You will be asked to RATE THE SERVICE, your rating me, my response, not the website, rating has no effect on your payment, and it DOES NOT close the post. A rating IS REQUIRED, if you can't complete the required rating today, let me know why so I can get you exactly what's needed.Thanks Chris
Customer: replied 2 years ago.
I will check the switch this evening, as for the 7pin connector it was a kit that hooked into the existing 4 pin it then has 3 wires to splice into the rear harness (Brake control wire which was blue, the reverse lights which was purple, and the 12v constant which was black) I spliced the brake control wire to the blue and the 12v constant to a black wire I thought was the 12 v constant (It wasn't I believe the 12v constant is orange) I did not hook up the purple reverse lights at all. what would help is a diagram for the rear light harness if I knew what the black wire was that I spliced into that would help. I knew something was wrong when I hooked my travel trailer up and my brake controller was making a buzzing sound and I could smell warm wires so immediately shut the truck off and unplugged the trailer, the guy at the rv place hooked a meter up to my plug and said that voltage was going back into the system so when I cut the wire to what I thought was the 12v lead the problem went away. but it was really to late and now my windows, radio, instrument panel will not work. let me know what other information you need. thanks for your help
Customer: replied 2 years ago.
I forgot one other thing, since the incident every time I turned the head light switch, fuse number 6 will blow. Now as for your request to jump the wire from the battery to the light switch it blew the fuse on pin #5. Let me know what else you need. Thanks
Expert:  Chris (aka- Moose) replied 2 years ago.
Below are the diagrams of the rear lamps and the way the 7 pin should be wired.
Customer: replied 2 years ago.
Thank you for all the diagrams, I believe I found the wire. It is located on diagram trailer/camper adapter (95-1) it is the black wire coming out of (Trailer Tow Relay, Parking lamp) its also labeled C270F, do you have any suggestions? I will replace that relay tonight and see what happens. Also what were your thoughts on the light switch I tested for you. I appreciate your help.
Expert:  Chris (aka- Moose) replied 2 years ago.
I was hoping it would of been pin 4 instead being pin 5 runs all over the truck not pointing us to an area that is smaller. You will need to follow and look over this wire harness to find where the wiring is chaffed and touching chassis.
The black wire to the parking lamp relay is a ground wire.
Customer: replied 2 years ago.
Which harness need to be checked? The entire truck or just the harness that deals with the lights and trailer hook-up? Also I tried replacing the relay and it didn't help as soon as I turned on the parking lights it blew fuse #6. Does that help narrow anything down? Also i still don't have power windows, radio, locks or instrument panel. What would cause that, could it be the PCM or the body security module? how hard is it to check the harness? Thanks for the help.
Expert:  Chris (aka- Moose) replied 2 years ago.
This is more than I believe I can diagnose not in person. There are just to many issues and I am not 100% sure what wires you spliced into to cause all of this. I am going to opt out and get you back on the list for another to try.