Rear Fog Lights
Rear fog lights were a Europe only
option on e30s. The US spec cars came with sockets for rear fog light
bulbs, but the wiring doesn't exist. I took the time to make the socket in
the rear bulb holder work, and wired a 12v switch (AC switch, with the labels
sanded off). One button on the switch does front fog lights, and the other
controls rear fog lights.
Below are pictures of how I installed the wiring. I
used a solid copper wire to create a pin in the harness. I wired this to
the switch in the front. I had to solder the metal plate that acts as a
wire to the bulbs, so that it completes the circuit inside the bulb holder.
It's a pretty simple install, and gives a lot of light in foggy conditions
allowing better vision of your car to drivers behind you.
