3rd Brake Light Wiring (from late model, BMW/Hella)

[ol'_rusty]

One light, four wires; any idea how to tie this in with the current brake light system, other than by trial and error? Brown (ground), grn/red, and grn/black x 2.

My rolling project fully loaded for travel to the southern Sierra for my summer job.

[Guest Anonymous]

The extra two wires are probably for later models that use the car's check circuitry to alert you when a bulb is burned out. I would just hook up the two wires that are thickest and go directly to the bulb socket.

[c.d.iesel]

....looks just like a Mercedes-Benz 190E light

check yer bone yards

[eastsidebimmer]

head over to radio shack and get a packet of gold spade terminal bridge connectors (pictured below) and just share the hot from the driver side brakelight and also share the ground lug too. Attach the 2 wires along your rear wiring harness loom and over to wherever you want to mout the light. Hooking it in like this avoids drilling for an extra ground, etc.