quick, ignorant question:
which of the three wires goes to which part of the lamp holder, in the [EDIT:] BRAKE LIGHT of a van?

ha ha! just testing the systemalex_holden wrote:I think you've mixed up the indicator wires and the brake light wires. The indicators only have a single filament so there are only two connections.
Right hoI think the earth wire should go to whichever connector is attached to the baseplate.
Oh! Okay! Seems a bit random - but very sensible - cheers. When I've established which should go where I will make a note!With the brakelights, connect the earth to the baseplate again and take a guess with the other two. If you've got it wrong the bright filament will come on when you switch the sidelights on.