2012 Trailer running lights not working
07-20-2012, 05:28 PM
#12
I used to teach new techs electrical troubleshooting on office equipment. I found a fuse that looked good but really was open and added it to my bugging kit. Lots of guys would look at it and assume it was good without testing it with a meter.
05-09-2013, 04:03 PM
#13
Thanks was having problems with my running lights on my trailer not working when hooked to my 2012 F150 XLT, turned out fuse 67 was blown, did not appear blown on initial inspection but when replaced it worked.
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07-01-2014, 10:04 AM
#14
Im having the same issue with my 2012 and I took it to the dealer and when we checked it with a test light it was showing a real weak signal , but not enough to power the running lights, you guys think it could be a relay not working properly, I hate to take it back to the dealer they want to keep the truck for a couple of days to figure it out.
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04-15-2015, 11:08 PM
#16
Junior Member
Just wanted to follow up for anyone who may have this issue in the future.
It was fuse #67 under the hood (20amp). Although we checked that fuse that night we couldn't tell it was blown using a flashlight or garage lighting. Once I took the fuse out in the day light you could barely see wher the fuse had been blown. Replaced the fuse and everything worked fine.
It was fuse #67 under the hood (20amp). Although we checked that fuse that night we couldn't tell it was blown using a flashlight or garage lighting. Once I took the fuse out in the day light you could barely see wher the fuse had been blown. Replaced the fuse and everything worked fine.
Dude that worked or I think so. I checked the fuse on my new truck and that appears to be it. My fuse was blown. Seams early for a 2014 6k mile truck.
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04-28-2016, 04:11 PM
#19
Thanks to all of you for this helpful information... I recently became the new owner of a 2012 F150 and experienced this problem.. A google search brought me here and I'm thinking this forum will certainly come in handy.. it sure did today.
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05-23-2016, 03:02 PM
#20
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2012 F150 Supercrew Lariat - No Trailer park lights
I had an issue with the trailer park lights too, but mine was an open wire.
There is a brown wire from relay 6 to the trailer connector that supplies power for the park lights. On top of the drivers front wheel well near the brake booster there are two connectors mounted closely together, the smaller connector handles the dark brown wire to the trailer park lights. You could check power here from the fuse box with your headlights / parking lights turned on if you need to verify fuse and relay operation. In my case I had to disconnect this connector and the one on top of the drivers side frame rail near the rear bumper to check continuity by jumping the light green and dark brown wires together. I ended up fixing my problem by splicing a replacement wire from the connector at the wheel well to about halfway back on the frame.
There is a brown wire from relay 6 to the trailer connector that supplies power for the park lights. On top of the drivers front wheel well near the brake booster there are two connectors mounted closely together, the smaller connector handles the dark brown wire to the trailer park lights. You could check power here from the fuse box with your headlights / parking lights turned on if you need to verify fuse and relay operation. In my case I had to disconnect this connector and the one on top of the drivers side frame rail near the rear bumper to check continuity by jumping the light green and dark brown wires together. I ended up fixing my problem by splicing a replacement wire from the connector at the wheel well to about halfway back on the frame.