Bjorn - I bet you know this, butt to be sure - when disconnecting/reconnecting the battery, the proper method is: negative terminal is first off, last on. I notice you said "terminal(s)", so thought I'd better mention the procedure.bgudmest said:My radio hasn't been working so I have tried disconnecting the battery. Each time I do this when I reconnect the terminal(s) I get a big spark off the battery even though I have the ignition switch in the OFF position. What's going on????
The service manual is a very useful thing to have. You did not mention checking the fuse for the radio. Try this: switch on the map light there at the top of your dashboard. You don't need to turn on the key, the circut to the map light is always hot. If the map light does turn on it is not the fuse (both the radio and the map light use the same fuse). If the map light does not turn on, it's likely to be the fuse. If that is the case, and you don't have the manual or other documentation about how to get at the fuses, let us know and we'll try to guide you in.bgudmest said:Bill,
I purchased a used 2005 K1200LT 2 weeks ago. When the seller demonstrated it to me the radio worked fine. When I got it home, the radio didn't even turn on. So I've tried all of the reset tricks that I read on this site. I called a BMW dealer service department thinking it might be a weak battery. I remember the seller demonstrating the electric reverse feature of the bike twice. I thought this might have excessively drained the battery, so I put a car battery charger on it for a few hours and then reconnected the battery and nothing happened. The battery has a date code stamped on it 04/06. If this is April 2006 the battery should still be good. If it is June 2004 then the battery might need replacing. Unfortunately the seller has been on 2 weeks vacation (left the day I picked up the bike) and I haven't been able to ask him these questions. I need to purchase a BMW service manual and schematics so I can get a better look at what makes this bike tick...........
Ayuh. Been there, done that too.bgudmest said:For some reason I've been telling myself that "it can't be a blown fuse". Well, because of one of your reply comments, I checked the fuse and sure enough "it's blown"........
:thumb: Congrats! Glad it worked out. Don't forget to swap out that 7.5 amp fuse for one of the right amperage (I think it's a 4 amp?) And don't forget to reset the Throttle Position Sensor as mentioned above.bgudmest said:After slapping myself a few times I took the 7.5 amp fuse out of the seat heater fuse slot and put it in the radio fuse slot. The radio came on as soon as I put the switch in the "ON" position. Mission success.
Well, I can promise you that you will not have to worry about carbs on the LT. Now you get to worry about the final drive, shift linkage, squeeling brakes, cowbell rotors . . . .bgudmest said:I did own a 1980 R75/7 BMW. I spent alot of sleepless nights working on it's ignition and carbs. I got so frustrated that I sold it 5 years later and never looked back.
Great to have you with us.bgudmest said:I'm back and I'm ready to learn everything there is about my 2005 K1200LT. I'm counting on you guys to help along...........Thanks in advance for your help !