2004 trailer wiring problem
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2004 trailer wiring problem
I just found this site today while I was looking for an answer to my problem. I've ended up looking for over an hour at everything other than an answer to my problem. What a great site. My names Roger I have an 2004 f150 4.6 4x4.
I bought a brand new trailer and went to plug into the 4 pin trailer connector and none of the lights worked. We tried a 7 pin connector that had a 4 pin adapter and that didn't work either. I used 4 pin trailer tester with the lights on it and I had no power. I used my volt meter in both the 4 pin and 7 pin receptacles and had under 1 volt. I checked all the fuses in the fuse box that had anything to do with towing. Anyone got any ideas or know what might be wrong?
Thanks
Roger
I bought a brand new trailer and went to plug into the 4 pin trailer connector and none of the lights worked. We tried a 7 pin connector that had a 4 pin adapter and that didn't work either. I used 4 pin trailer tester with the lights on it and I had no power. I used my volt meter in both the 4 pin and 7 pin receptacles and had under 1 volt. I checked all the fuses in the fuse box that had anything to do with towing. Anyone got any ideas or know what might be wrong?
Thanks
Roger
Elder User
Joined: Jan 2007
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From: Greenville, SC
It will go in the fuse box in the pass. floorboard.
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The manual says there's two in the fuse box for towing . Both are installed. I've pulled a trailer a few times last year with no problems. Could one of these two relays be bad? Can I test it with a simple volt meter?
Thanks for the reply's I apreciate any help.
Thanks for the reply's I apreciate any help.
Tuned
Joined: Aug 2007
Posts: 492
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From: Louisville
Also check your manual and look for any fuses under the hood..
Postmaster
Joined: Aug 2004
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From: Greenvile, SC
This may sound a bit off but maybe checking the ground lead back on factory trailer wiring harness. It bolts up on the upper side of the tubular support in between the spare tire and the back side of the bumper- it should be a tapped hole. I'll try and locate/acquire a pic for you if necessary
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Thanks guys for all the advice. I'm gonna check the ground tomorrow and The relay too. I'll let you guys know what I find.
thanks again
thanks again
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Joe Kucinski
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Joined: Jan 2003
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From: Gilbert, Arizona (Phoenix
I'm having the same problem that ws6gta had. What was the final resolution? I have towed in the past with no problems with the lights. Suddenly, nothing on the trailer works.
When I connect trailer to someone else's truck it works fine so I know it isn't the trailer wiring. All my fuses are good.
I'm anxious to hear if it was a relay or a ground. If so, which relay?
When I connect trailer to someone else's truck it works fine so I know it isn't the trailer wiring. All my fuses are good.
I'm anxious to hear if it was a relay or a ground. If so, which relay?
Senior User
Joined: Jan 2003
Posts: 192
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From: Gilbert, Arizona (Phoenix
I found the problem on my trailer. The pigtail on the trailer got crimped and two wires shorted together blowing out all the bulbs on the trailer. I replaced the pigtail and bulbs and I'm good to go.
Fx4local3284 - there are specific fuses for left turn trailer ligts (as well as right turn trailer lights). Check your fuse.
Fx4local3284 - there are specific fuses for left turn trailer ligts (as well as right turn trailer lights). Check your fuse.
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