2008 F-150 Trailer Lights

[Mid-Lake Rock]

Hi All:

I recently went to hook up a boat trailer to my F-150 and I had no lights. Same trailer was fine last December. I looked and replaced fuses number 36 and 42 with are listed as "trailer tow turn/stop lamps." I hooked my truck up to another trailer with lights that are known to work. The blinkers and brakes work, however I have no running lights. Put another truck on the same trailer and I have running lights. So I think we've isolated the problem to my vehicle.

Looking through my F-150 owner's guide, it lists relay 201 as "trailer tow park lamps." Is this the relay for the running lights? If so, I am going to replace it to see if that is my problem.

I'm thinking the relay might have popped at the same time the fuses for the turn/stop lamps. Over the winter I pulled a friend's snowmobile trailer that had no lights. That friend told me that after he hooked his F150 to the snowmobile trailer is blew the fuses that are used for towing.

Any thoughts are much appreciated. Just want to make sure I get the correct relay or fuse. Thanks.

[Macgyver55]

My neighbors 2007 had no tail lights on the trailer and I think it was fuse #10 if I remember....but then, it was a few weeks ago.

[efgh]

I had the same thing happen to my 2011 Super Duty,look real close at the 30 amp fuses in the fuse box under the hood. There is a red cover on top of the fuses that can be popped off to inspect the fuse, the second from the front, closes to the engine was blown.

[K_Josh87]

seems like I had this problem as well on an 07 150... i remember it being a fuse under the dash... but i don't recall which one... i think it was a pain to figure out which one I recall...

[Jeremy airjer W]

Fue 10 in the same fuse box you found the other two fuses.

[jwmiller33]

I recently had the same problem on my 2008 F150 (blinkers and brake lights worked, running lights didnt). Hooked trailer up to another truck and all lights worked fine. I thought it was a fuse or relay at first but after checking all those and finding nothing, I was stumped. Turns out the trailer light plug in on the truck needed to be cleaned off as there was some residue on a few of the prongs that must have been the culprit. Cleaned off the connections with cotton balls and q tips and trailer lights have worked great ever since. Just something for you to check out.

[Mid-Lake Rock]

Thanks for all the responses. It was fuse 10. I feel like a total maroon. The fuses are listed on three page of the owner's guide and I was looking near the numbers for the turn/brake fuses.

I'm not an automotive genius and I like the fact that I get good advice on this forum. Wish I had more to contribute to repay all the great info I pick up here.

[Jeremy airjer W]

I'll make you a deal. You keep getting good advice here and we'll keep giving it!

[Tom7227]

I feel like a total maroon.

Is that a maroon marooned moron?

Sorry but I couldn't pass it up.