ScottieJ wrote:He's only a rear is needed and a light up switch will do

Cheers. Thought so, but it's better to be safe than sorry, an' all that...
donkeychomp wrote:And don't worry if your reversing light doesn't work because that's not part of the MOT.
(well it was when mine passed anyway)
Really? Well, I'll try to get mine working anyway, if only because I'd like to have working reverse lights!
Gonna make this out of wood tomorrow (WAD - Wood Aided Design), as a proof of concept:
If it doesn't work, I'll tweak the design, make another WAD. Rinse and repeat until it fits properly.
Once it works, I'll make the real thing out of 8/10mm plate. I have an 82mm cobalt holesaw in the post, so I should be able to actually cut the right sized hole into the steel plate. The rest is just 8mm or 9mm holes drilled in the right places, and the plate cutting to size with angry grinder. Should be pretty simple to do.