Postby Zen_master » Sat Nov 12, 2016 10:30 am
Hooked up the boat expecting to hit the lake this weekend and upon the final step in the process of plugging in the 4-pin connector I discovered I have no trailer lights.
To be clear, this is not a situation where just the running lights are out or a case of no turn signals. It's all the lights including brake lights.
I have another tow vehicle (Jeep) and the trailer lights work when hooked up to that truck therefore eliminating the issue being at the trailer. Further, the trailer lights worked a few weeks prior when towed by the Pathfinder leading me to believe it's a sudden change as opposed to a gradually evolving problem or intermittent issue.
In the engine compartment there are two boxes of relays and fuses. I checked all the fuses and they are OK. But I don't see a visual way of verifying if a relay is defective.
Several of the relays are labeled trailer, such as "trailer left" or "trailer right." I find it hard to believe these are redundant and wish to seek the thoughts of those here as to which one would be responsible for all trailer lights not working when hooked up to the R51.
Not sure if there's any difference between the 6-cylinder version and the V8 but in this case the problem vehicle is a V8.
Please advise if anyone knows which relay is responsible for running lights on the trailer. Thanks in advance.