Join Date: Jun 2009
Location: Burton, British Columbia, Canada
You need a three wire set up,no choice there. When you get it, connect the black wire to a battery ground.
Then alternately the other twos to the positive. The one showing "more light" will be the brake light.
Don't know for sure how the bike is wired, but there has to be a brown wire going to the tailight. This will be the ground to the new light, BMW grounds are always brown.
So black from the new taillight to BMW brown and then either the other twos to their corresponding function, brake and tail,but make sure the brake light puts out more light than the parking light.
Benelli 50cc at 14
Yamaha RD 200 at 16
Yamaha RD 350 at 17
Honda CB 750 F at 18
Honda V45 Sabre at 24
BMW K100RS at 27
BMW R100GS at 34
BMW K1200RS at 53