BMW all boxers with speedometer gear output R65 R80 R100 R100GS
The circumference setting is 1400mm for R100GS
1380mm for high gear ration R100GS
Wiring connections as follows - Acewell colours are for ACE-4454, ACE-5856, ACE-6456, MD85-556, for other models check colours on Acewell wiring diagram against function
BMW | Acewell | Function |
Green/Blue | Red | switched positive |
Brown | Black | negative |
Brown/Green | light blue | oil pressure |
Brown/Black | green/white (green tail) | neutral |
White | light green | high beam |
Blue/Red | orange | left indicator |
Blue/Black | brown/white (brown tail) | right indicator |
Grey/Black | purple | backlight |
| yellow | RPM |
Blue | connect to BMW green/blue via 50 ohm 3W resistor if the alternator does not work |
A permanent positive is also required to run the clock
Connect the brown wire on the Acewell to the red wire at one of the following locations:
R80RT, R100RS, R100RT - red wire on BMW clock
R65, R80 - red wire on connector for additional instruments
Please Note: Choose 3 wire plug if used with speedo brands other than Acewell