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Mack77
08-17-2008, 10:46 PM
Hi Guys,

I'm currently working on my trailer (new lights, checking the wires, etc). Everything works great, brake lights, turn signals, hazards. Everything except the night time running lights. Any ideas?

It's not the truck, because i attached another trailer to test this out, and the night time running lights worked...

Thanks!
02gpR
08-17-2008, 11:09 PM
I'd be interested to know about this my self . . a help a buddy get some of his lights working . . and when we did . . SAME THING HAPPEN!!! all but the night time running lights . . ANY INFO WOULD BE GREAT !!! as we do trailer 50% of the time in the dark !!!
MVR 155
08-18-2008, 03:42 PM
I believe the brown wire is the hot (+) for the running gear, get yourself a test light and make sure your getting power, if not you have to track down where the connection is cut. You also want to make sure you have a good clean ground (White wire)
RX951
08-18-2008, 03:48 PM
wiring diagram
http://www.greenhulk.net/forums/showpost.php?p=136308&postcount=14
02gpR
08-18-2008, 08:28 PM
HMMM. . well i redid the GROUND ON THE TRAILER AND GOT MOST OF THE LIGHTS WORKING . . . tested the brown and it had power . . but i don't know. . didn't go WAY TO THE BACK . . .COULD BE THE PROBLEM . . How ever . .BOTH LIGHTS NOT WORKING ? ? WEIRD !!!
Mack77
08-19-2008, 12:25 AM
Thanks for the diagram...

I also traced back the wires, there was some corrosion on the side marker so I just bypassed the amber sidemarker making it a straight run to each of the rear lights. Tried a different plug...NOTHING. Same problems! All functions of both lights work, except the night "running lights".
MVR 155
08-19-2008, 07:55 AM
Thanks for the diagram...

I also traced back the wires, there was some corrosion on the side marker so I just bypassed the amber sidemarker making it a straight run to each of the rear lights. Tried a different plug...NOTHING. Same problems! All functions of both lights work, except the night "running lights".

If you dont have a test light you can pick one up at just about any auto parts store for less than $10, this will greatly help you out in terms of tracking down the culprit. If your not running LED's check your bulbs as the vibration and such can break the filiment very easily.
04RXP22
08-19-2008, 11:16 AM
Are the running lights on the tail-lights working??
Mack77
08-19-2008, 06:04 PM
Are the running lights on the tail-lights working??

No, that's the issue. Everything works except the running lights8-[
Sundance
08-19-2008, 06:55 PM
Brake lights ok?? Could be the bulbs.
02gpR
08-19-2008, 08:10 PM
Don't mean to high jack the thread on you . . but yes the brake lights . . and flashers/ blinkers work . . . but yet BOTH RUNNING LIGHTS don't work . . :-k
04RXP22
08-20-2008, 04:13 PM
No, that's the issue. Everything works except the running lights8-[

There is an issue somewhere with brown wire.

Where the two sides of the wishbone of the trailer come together they are most like likey splice together at that spot. This may be a bad splice.

Or.... The trailer side of the light plug may be bad. Go out the Auto Parts store buy a new one and cut the existing one off. Re wire it. Try that.

It def sounds like the plug is bad. Inside that plug some where, the brown wire is not making a connection to the terminal.