Tror jeg fant ut av hvordan det skal kobles =) Hentet fra Thesamba
From 2-terminal to 3-terminal, brake-light switch & warning-light upgrade circuit
A = electric switch inside brake-circuit-failure warning-light unit
B = 3-terminal brake-light switch
C = Dual-circuit brake warning lamp
a = blue cable to brake-circuit-failure warning-light unit's
internal switch-terminal 61 (shared with ignition warning light)
b = black cable to fuse-box terminal 15
c = brown cable to Earth (i.e. Ground in USA parlance)
d = black/red cable to brake lights