Depends what is wrong - mine the LED drivers went funny on one side - brake light on with indicator, no brake light etc on one side.  Have you checked your car on another trailer (ruled out car socket wiring?)Check trailer wiring for corrosion or broken wires at connector - my trailer both wires (each side) inserted into trailer connector and salt got in as connector not designed for this (installer did not setup properly) so full of corrosion which I think eventually killed drivers - but also confused me as fault from corrosion and also in lights themselves.

Shanedog wrote: Hmm best I get an auto sparky onto it I think. The trailor is only 6 months old and the plugs less than that after I failed to put trailor on properly and never made it out the driveway a few months back🙄. I haven't got enough free time before the weekend to nut it out myself. Thanks for the info👍

Yes time or money - or with a boat both!  Did lights work properly after repair?

Had to fork out for new lights today, turned out the Trojan led light aren't so waterproof after all. Hopefully the cm ones are better. Money, who needs it lol

I brought the whole lot as a package about 6-7 months ago from the South Island. I will be inquiring about any possible warranty for the lights.

Is this an American wired vehicle?
The Yanks wire different...and have done so right back into the 60s... up under the dash
They have .. damn got to rem how this goes now.. something like this
Trailer wired for the rest of the world cars...
hook onto a American car,, the brakes become indicators, the indicators become brakes.. but hit the brakes the indicators go off...
I has to do with having 2 brake lights on the rear but when turn on indicators one of them becomes the indicator.. flashes
 So either have to make an adapter between the car and trailer connector , but that doesn't work quite correctly as well... but brakes become correct red, and something like indicator stays on when braking...

They only real way is to connect the trailer loom up under the dash, cutting to the looms under the dash... but dont know if this applied to post mid 90s/ early 2000s American cars...