Tri750
Mr. Knew it All
- Joined
- Mar 23, 2005
- Location
- Clovis, CA
- Moto(s)
- Current: '73 Z1 Racer, '76 BMW R75/6, '76 Tri 750, '08 Kymco 200S
- Name
- Big Al

The CANbus isn't going to like it.
The Kisan flasher is specific for the CANbus bikes, sometimes you can use the extra power port pigtail as they allow some draw before they smell a rat and shut down.
As example, they allow you to power a heated vest but only up to size XL for example as the big boy sizes draw too many amps. LED's should be fine.
Here's the link to the full PD site that has all the wiring diagrams for the different versions they made.
You can figure out how to navigate it but don't get too generous with it as it's supposed to be for Fleet Department PD use. There's no password but be respectful of it.
http://www.bmwmc.net/Gallery/Gallery.aspx
To nag you again, some departments tweak the wiring to suit their needs so watch that, AND when you find power you like, let it ride for a while before you start the victory dance as the CANbus will shut you down within a minute if it doesn't like your addition plus some circuits are on timers .
Yea, you possibly are overcomplicatibg things .
Many if not all the smaller lights have their own flash circuitry built in .
Us cave dwellers use a 9v battery (old term, transistor radio battery) to fire them up on the bench to test operation and to see if they have the built in flash pattern .
Hey! Just found this thread. I just picked up a 2011 R1200RT-P and I'm in the slow process of figuring it out. It has all the lights intact and they still work, however under the radio box there are two grey bundles of wires that were cut through and I'm guessing they were for the siren/radio stuff. None of the LEDs on the extra handlebar controls light up, but most of the switches work. I'm also looking to tap into the speaker system and add a bluetooth as I plan on doing a lot of parking lot work with the bike and it'd be cool to have the speakers working.
The harness is an inextricable mess, so I wish you the best of luck in figuring it out and repairing it if that's what you intend to do. If you just want to add your own farkle to the switches, I highly recommend snipping the wires before the harness and running your own wiring to the switch.
I'd definitely start finding and capping/sealing all the stray wires that they might have snipped, and removing the Code3 box under the seat if you don't need it, to eliminate battery leeching. Also remove the spare battery and cap those wires, too. Then you can start isolating the starter problem. Could be it needs better grounding. Also, you need to test the voltages under load to know if the battery is good.
I ended up removing all the lights on mine and replacing them with my own (spot/flood, and Whelen TIR3 amber flashers), made some brackets for mounting up other accessories, and I removed the speakers... used that space to install my custom wiring harnesses instead. I originally had the same idea as you, but the bike has no radio, and you'd be hard pressed to find space to install one, or to find one that's adequately weatherproofed. I don't know what the regular RT radio looks like though, so you might have some ideas there.
Interesting stuff. I have been on the fence about pulling all the code 3 stuff out, mainly because have no clue how it's wired and don't want to mess anything up. I like the idea of having some rear amber flashers and I was thinking of using the front light pods to house a camera or something (and harvesting the current wiring harness to provide power). I'd like to check out your setup sometime and see what you've done..