Got hold of a trailer yesterday when I connect it up it says bulb failure L/H R so i check the bulbs both on my car and the trailer all the bulbs are fine., Could it be the connection between the trailer?
i get the same issue ONLY when I connect a trailer with the lights. I get "RH BRAKE BULB FAILURE" and as soon as I disconnect the trailer, all is fine and the message never shows, i thought maybe it was telling me the trailer brake light is bad
Not too sure as you are across the pond from me, but in the uk it is common for the light to be independent but both brake lights are one. I used to have a Volvo and to get round it the wiring was attached to the fuse box.