Which wire is which on accessory switch?

[Tim Cullis]

This is the fog lamp switch from the 12GSA. I'm planning to cut off the plastic connection and use it to switch my HIDs.

The switch has a green LED which shows when it's active, but I imagine this is taken from the live feed, so not sure why there's three wires, unless it's to do with a delay.

The three wires are black, mauve and white/grey stripe. Anyone know which is which?

Tim

 

[Tim Cullis]

I just knew I would get more responses if I stuck this in the 1200GS forum.

Any wiring gurus?

What's BMW's default colours for positive/neg?

Tim

 

[Ming]

Canbus wired wouldnt advise you go down that route ,Send a pm to btbr he is your man for this

 

[xylo66]

wiring

negative earth on the aux and dipped / main beams are all brown. If in doubt, simply use a multimeter on continuity setting and place across the brown wire and a exposed bolt on the frame or the negative battery terminal and it should close circuit ( if you have a audible setting on the multimeter like many do, it should "ring" ). Hope this helps a bit.