Join Date: Nov 2013
Location: Bradenton, FL, USA
Anti-Theft alarm problem on -98 K1200RS
I've got a recently-acquired K1200RS, '98 model with about 58K miles. The PO showed me the tubular lockswitch and red LED for the alarm but told me he'd never been able to get it to do anything other than flash the LED momentarily. I looked through the Clymer manual, since I design electronics as part of my living as an engineer and wanted to fix it, but the only reference to an anti-theft system there is a connector in the schematic--not much help and no location provided.
I was away from home two days ago and my wife called to let me know the bike was squawking. I got home six hours later and it was still doing so, so I put in the key and started the bike up, hoping the alarm would be smart enough to realize I was the proper owner. No dice--the alarm now became much louder and more piercing. It was coming from the rear taillight area. I put the tubular key into the keyswitch back there and twisted several times, noticed the switch body was twisting, tried to hold it still and turn, and it pulled rather easily out of the rear fender. Three wires are attached, and no combination of shorting them to each other cleared the alarm. So I disconnected the positive lead for the battery. After letting the bike sit for several days, I tried a reconnect but the alarm is still sounding.
So the alarm was firing, possibly due to a low battery condition, but after sounding an alarm for six hours there was still plenty of juice to fire the engine. Also, any disabling of the engine had clearly not happened. I don't have an owner's manual for the bike and can't find one online, nor do I have a manual for the alarm. I've looked at the installation and it's in a BMW-labeled case under the taillight. It's not obvious how to remove that case or disconnect the alarm without major disassembly of the rear fender, seat mount latch, and so forth. I don't want to remove an alarm and disable the bike, clearly. Anyone have any ideas where I could find manuals, or how to actually deal with the problem? Oh--I also had pulled fuse 8, which seems to be the only fuse that's not already assigned to other circuits, but that didn't stop the alarm. Pulling the battery cable silenced it immediately, so it does not seem to have its own battery like later models or touring models...
1998 K1200RS, 58K