No Running Lights on Trailer

[ElLobo888]

Hey

I am in need of some help. I am getting ready to move and I need to trailer some motorcycles but the my 99 Explorer Sport does not have any running lights on the trailer. If I hook the trailer to a different SUV it works fine so I am pretty sure it is not the trailer.

The SUV running lights still work fine so it is somewhere in the trailer lights but I am not sure. I have tried tracing it back and just can't figure it out. Is there an inline fuse somewhere?

Any Suggestions?

Thanks in advance

 

[GreenMando]

I use a tester that verifies proper wire placement on the outlet and plug.
You may need to use a test light and check them one by one.
You don't mention if it is 4 wire or 7 pin.

 

[RichCresci]

Check The fuse under the hood, that was my issue.

 

[SLVRTRC]

Check The fuse under the hood, that was my issue.

recently this weekend i experienced the same problem what fuse would this be?

 

[SLVRTRC]

recently this weekend i experienced the same problem what fuse would this be?

fixed mine... was the #25 fuse under the dash

 

[prince402]

I've got no running lights and no brake lights. The turn signals and flashers work. 94 EX EB. Plugged into trailer harness round-7 terminal inboard of bumper, passenger side.

Checked fuses under dash and under hood, i.e. fuse box and distribution box. They are OK.

See another thread on this: http://www.explorerforum.com/forums/showthread.php?t=320430

Please post any solution for this you may know.

 

[stoffer]

it's probably the ground...


try adding a groud wire (on the tow rig, from the trailer plug to the frame, if it works then use the groud you just ran and forget the stock ground wire)

 

[prince402]

Thanks for the ground reminder. I've tried that and my running lights are still out.

I got brake lights by disconnecting the battery for ten minutes and reconnecting it. See the second link below for details. Now I have all lights except for the running lights.

The three trailer harness relays are above the driver side rear wheel in the jack compartment. I can hear the relay for the trailer running lights click. I switched in a known good relay and the lights are still out.

Very good info here including why there are multiple grounds in the Ford 7 to 4 adapter:
http://www.explorerforum.com/Singleton/web/pages/trailerwiring.html
More good info including battery disconnecting to reset circuits:
http://www.justanswer.com/ford/6jynz-ford-explorer-sport-trac-no-power-triler-wiring.html

I'm going at it again today with my test meter (vom).

 

[prince402]

SOLVED I now have all lights including running lights.

See my post in the other thread on the same topic:
http://www.explorerforum.com/forums/showthread.php?t=320430