Join Date: May 2004
Location: Hazel Green, AL, USA
Re: Sticking brake lights
The 85,86,87, & 30 are standard US markings on relays and they relat to BMW relay markings as 30 - 1, 86 - 3, 85 - 5 and 87 - 2. If you can find a relay at an auto parts store that will physicaly match up with yours then it should work. Terminal 1 should be hot all the time (key off). Terminal 5 is the ground for the relay coil. Terminal 2 goes to the brake lights. There should be zero volts at terminal 3 with no brake switch made. I believe you are seeing a leakage voltage from one of the switches if you see 10.4 volts and that is enough to operate the relay.
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT
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