Forum Discussion

nimblewill's avatar
nimblewill
Explorer
Jul 03, 2013

Running lights but no brake or turn signal

I've hooked up to other trailers and I have the same problems. It really seems to be in my vehicle. Any suggestions.
  • Hornnumb2 wrote:
    If the vehicle lights are working correctly then it has to be in the truck plug, some of the factory ones just plug into a harness by the spare tire. Lay under there and follow the wire. Might just need to be unplugged to make good contact.


    Ok this is the last thing I have tried. Nothing works. The vehicle lights work and the running lights work. When I tested the male ends of the plug under the car I got no light on my tester. I get one light of the 7 posts on the trailer plug. Man is this frustrating.
  • If the vehicle lights are working correctly then it has to be in the truck plug, some of the factory ones just plug into a harness by the spare tire. Lay under there and follow the wire. Might just need to be unplugged to make good contact.
  • RoyB's avatar
    RoyB
    Explorer II
    Marinehawk - I ordered mine from ETRAILER.COM, AMAZON carries it as well. I have seen them in a local auto parts store also - something similar anyway...

    It sure takes the guessing away on where the fault may be...

    Roy Ken
  • Look under the hood driver's wheel well for fuses.
    Check your owner's manual.
  • nickthehunter wrote:
    Have you ever used this trailer connector before? Is it one turn signal or both? Generally, the stop lamp and the turn signal are the same wire, but not always. If it's just one turn signal, that narrows the problem down to one wire. You need to get a volt meter and check the one wire and figure out the problem. If it's both turn signals, all bets are off.


    Yes, but not since buying this camper.
  • RoyB's avatar
    RoyB
    Explorer II
    I carry one of these 7-way test adapters in my RV tool box... This adapter has the built-in LED lights to show the truck is provide the correct signals needed.. Takes the guessing out of which blades do what...



    Roy Ken
  • Have you ever used this trailer connector before? Is it one turn signal or both? Generally, the stop lamp and the turn signal are the same wire, but not always. If it's just one turn signal, that narrows the problem down to one wire. You need to get a volt meter and check the one wire and figure out the problem. If it's both turn signals, all bets are off.