I've got myself an interesting wrenching job buying a burned police r1150 RT that I am rebuilding now. I need to replace wiring harness as it was severely damaged. I've ordered first one only to realize I have a 2004 TWO SPARK engine which needs special wiring. I've got a 2004 wiring harness for a 1150 RS ... and realized the front part is totally different to what the "Authorities" r1150 RT-A version had. :huh Now I need to buy the correct handlebar switches. ... but I just don't find any second-hand RS switches that would suit the wiring I have now. I am also not sure what I am supposed to look for as the connectors on the harness are so different. I can not find specifics on what version of wiring harness has which connectors and which fit which switch, so now I am terribly confused on what switches I really need to buy. So to boil down: If I have wiring harness for r1150 RS that looks like this: What handlebar switch connectors will fit on it? This one: supposed to fit r1150 rt or maybe this one that suppoesdly fits 1150 rt too? or this 1200rt which looks the same as the previous to me Even this K1200GT (the same connector again?) What crucial differences are there in wiring when bikes have/don't have heating, lights-off switch, abs switch, etc ... ? I am thinking there is a production date when bmw began to use different connectors for the whole right switch. Maybe this coincides with the use of double spark. And this is only the right switch, have the same mess on the left. Please just think this one through with me, or share any resources on where to learn what connectors do what. (have 1150GS and RT repair manual, I also use this http://www.realoem.com). thank you!