tail lamp fuse

I am having a problem with the tail lamp lights for my boat trailer. I have used a tester to determine that it is not my boat lights (even though it was the cause of the blown fuse). I replaced a fuse to operate the right brake light and blinker. I currently have brake lights and blinkers to both lights, but not tail lights. I can not find the tail lamp fuse. I have looked in the manual at all three fuse locations and do not see one labled trailer tail lamps. Any help would be appreciated.

What year is your truck? Does it have a factory wire harness for the trailer or did you wire one in yourself? From the limited info you give, it sounds like you have a short or a bad ground somewhere. If your tail lights on the truck are working, then it seems likely that your problem would be from the harness on back to the trailer lights and not a fuse.

It is a 2003. The boat was wired some time ago and worked well in the past. My tail light cover was cracked and water got in, I imagine that is what caused the fuse for the trailer brake and blinker to blow. The truck was set up by the dealer when I bought it. The tail lamps on the truck all work fine. It is just the tail lamps for the trailer. I plugged in a tester at the hitch and it indicates no tail lamps. The fuse for the blinker and brake being blown is what made me think that a fuse for the tail lamp is blown, but I don't know where that fuse is located.

You say that your taillamps on the truck are working so all the wiring on the truck is fine, including whatever fuse may be there. I don't believe that the trailer wiring has a separate fuse. Start where the harness is wired for the trailer and test each circuit. You already know that the brake lights and turn signals on the trailer work so you can eliminate those. This has to be something simple.

when you blew the fuse you may have shorted the wiring out

Roll under the back of your truck with your test light, if your truck was equipped with the factory tow pack, there should be a plug from the truck wiring harness to the wiring going to the trailer harness that has the receptacle located beside your hitch.

The plug sometimes is located under (on top of) the spare tire so you may have to remove the spare to find it. unplug the connector and see if you have power there.

I'm betting that your power problem is located somewhere between the connector and the receptacle.

If the trailer connection is wired in, as in tapped to the wires under your truck, it's possible that you have a tap that has a bad connection.

Best thing to do is get your test light out and go to work, starting at your receptacle and working toward the truck.

Good luck!!

-slacker

There IS a seperate fuze for the trailer lights. It cost me a new set of trailer lamps to figure that out. (D'oh!)

On my '99, there's a large box with a removable cover under the hood, just behind the battery. Look at the diagram, that's where you'll find the problem.

LR