Lights issue with a trailer

Forgot to add it's the green box

CJV8 wrote: I don't have the wiring diagram to hand but was the white on the plug to the black in the Jimny loom? That's me applying a non-sparky's logic that black = earth.....

Luckily, the Japanese still use sensible colours, black is earth. The Eurocrats don't.

If you try that logic on a Vauxhall it will end in tears: black is live.

With standard 7 pin socket wiring white is the earth.

You do kind of wonder which idiot thought that up

I'd have made the centre earth, and coloured it black, but what do I know............

I'd have also arranged the males & females in a pattern so you couldn't get the plug in 180 degrees out and blow all the fuses......

That wiring diagram matches the one we used, so that rules that out.
Also checked the trailer plug, it looks brand new so no issue there.
I think rather than try and trace a potential fault in the wiring I'm just going to renew it all with fresh cable.

I found the fuse box, my back's about recovered! I'll put it down to the small dimensions and tight packaging of a Jimny....
Replaced the tail light fuse so at least Jimny's sorted out.

Cheers for all the help guys.