Always got a small can of WD40 in me bag .
Back on the subject to trailers and fuses
I can’t remember the make of trailer but when at walkers ( crisps) we had problems with a trailer concerning lights, now many moons ago when I was at Gregory’s I remembered that we had a similar problem and mentioned to the in house fitters at walkers that there was a fuse box behind the trailer plate so it might be worth a look at .
Yep there was a fuse blown but the fitters had never come across this before and I’m buggered if I can remember the trailer type .
Just another bit of useless information that might solve a problem for someone.