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-   -   Simplified Wiring Harness Help, Please! (http://www.advrider.com/forums/showthread.php?t=842115)

Muddy3 11-18-2012 08:37 AM

Simplified Wiring Harness Help, Please!
 
This little project is my future RTW bike. Frame/subframe from an RT. Main frame is reinforced with standard HPN fare. Engine and drivetrain are from a 93 R100gs. Front end is from a Yamaha. Top end is on it's way. The goal is to keep this bastard bike simple and light.
http://tajirsa.smugmug.com/Other/R10.../0/M/hpn-M.jpg
Next up is the wiring harness. I'd like to simplify it as much as possible. The plan is to separate the lighting from the ignition/charging system. The lighting/ instrument side will consist of a Tusk dual sport system adapted to fit this bike. I need help with the ignition/charging side. What's the simplest, bombproof wiring harness that I can put together using the parts from a standard R100gs.

I came across this diagram of a dual ignition system for mid 80's R100 engine adapted for ultralite use.
http://tajirsa.smugmug.com/Other/R10...5000-001-M.jpg
This dual ignition system is standard for aircraft but not needed for my application. If you subtract that piece, am I in the ballpark for something that might work?
I realize there are a few differences between the mid 80's BMW wiring harness and the one from a 93gs. If you have these kind of skills and are willing to help me out...I'm all ears. Thanks!

Clay Spinner 11-18-2012 09:06 AM

Might be worth a browse of a thread by adventure950. He made up a wiring harness for him hpn style build. May have some more ideas. Good luck with the build.. it looks very nice.

RecycledRS 11-18-2012 10:33 AM

You may want to reconsider eliminating the "duel" ignition as it could aid in reliability on a RTW trip. Would also recommend a 330 ohm resistor in parallel with the charge light and locating the fuses in an easily accessible location.

disston 11-18-2012 11:09 AM

I think the wiring you have shown is fine. I'd want dual plugging tho on something like you are planning and I think that extra circuit would run the bottom plugs just fine. As much as we complain about the quality of gasoline here in some places it is worse. Dual plugs help a lot I hear.

bmweuro 11-18-2012 12:43 PM

If you want to stick with BMW color coding use a /5 wire harness. They're only $65.00 new(part no. 61 11 1 354 674)


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