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bmwrebel
03-28-2009, 12:14 AM
I just got my R1200R :newtoy and I love it. The horn:fart is an other matter. I want to mount an air horn or duel hy way blasters but the wireing :dunno scares me. The newest BMW I worked on to now is my K75S (not selling that). I do not understand Canbus I know to run the power direct to the battery and use a relay. Any help would be welcome. Thank you for the information on the Wunderlic crash bars. :dance

marchyman
03-28-2009, 12:34 AM
I do not understand Canbus I know to run the power direct to the battery and use a relay. Any help would be welcome.

There's not much to know/understand regarding the CAN-bus in this application as you will not be anywhere near it. Buy the horn of your choice (Stebel Nautilus Compact seems to be popular -- http://www.twistedthrottle.com/trade/productview/2137/ for example). Install it using a relay where ever it fits. Run power to the relay from the battery. Tap off of the existing horn for the relay control.

// marc (I don't use a horn often enough to bother changing the stock unit on my GS).

Manfred
03-28-2009, 02:23 AM
For really loud horns without the mechanical failure opportunities of an air horn, I've been using these TM-80 dual tone horns for several years, on 2 bikes. Run through a relay, they are about 135db and all electric.

http://www.hornsplusauto.com/

deilenberger
03-28-2009, 02:54 AM
Since the R1200R uses the same ZFE (body-control module - which "powers" the horn) as the RT - which in it's original form used dual horns, it turns out you can use dual FIAMM horns off an RT without the need for a relay. I'm doing it on my R12R.

NippyNormans in the UK sells a kit you can use to connect to the existing wiring harness connector without having to cut any wires. From the looks of it - it is a BMW repair connector (yellow wires on it gives it away.) - Using the kit from NN it would be simple to make up a harness that will connect up two horns.

KIT: http://www.nippynormans.com/prodinfo.asp?number=STB-CANBUSKIT&variation=&aitem=1&mitem=6

Trick then is fitting the dual horns. One of them can mount (carefully positioned) on the stock horn bracket on the right side of the bike. If one was to remove the charcoal canister (perhaps for adjusting their aftermarket shock), one might find there is room and a hole available to mount the 2nd horn on the left side of the frame.

BTW - if you have a friendly parts guy - you might print out the page from Nippy's and show it to your parts guy. Perhaps motivate him to come up with a PN for the repair harness - then post it here with the phone number for the parts guy (reward the one who does the work..) and we'd all appreciate it.

Lots more on aftermarket horns on the R1200R can be found at: http://www.r1150r.org/board/viewtopic.php?f=20&t=13299

Good luck! :brad