factory towing - No tail lights on trailer
I have a 2001 F150 supercrew with factory towing package. My directional and brack lights work fine on my trailer but my tail lights do not. (They did at one time) I check the fuses per the manual and all are good. I also ohmed out my trailer adapter plug and that is fine. This is the case with multiple trailers I have hooked up to. Any ideas?
Cars & Trucks - Ford - F-150 - 2001 Ford F150 Styleside SuperCrew
Answers & Comments
Not sure which fuse you checked.
The Engine Compartment Fuse Panel ( Battery Junction Box / BJB ) is where the fuse is for the trailer tow adapter parking lamps.
Fuse # 5 is the fuse for the parking lamps, and the reversing lamps.
Next is the trailer tow adapter park lamp relay. This is what BJB Fuse #5 feeds, and the coil is operated by the truck's parking lamps. This is also in the BJB, Relay 201, it is the 1/2 size relay.
Not sure what you took a resistance reading from on the trailer tow adapter.
If you want, you can pull the trailer tow park lamp relay, and jumper the normally open contacts, which should provide power at the trailer tow adapters, regardless of the truck's lights.
This is the wiring diagram for the trailer tow park la2001 F150 supercrew w/ factory towing - No tail li - c2f0bcb.jpgmg alt="c2f0bcb.jpg" />