Curiouser and curiouser.
Well, I tried to find the horns without disassembling the LT and that appears to be impossible. I can see the one on the left side of the bike (cylinder head side), but I can't see or feel a second horn anywhere.
I reviewed my trusty Clymer manual (M501 1st edition) and it shows one horn on each side of the nose of the bike (page 322, figure 113). I can't see or feel one on the right side (crank side) of the bike in the location shown in the Clymer manual. I am guessing that maybe the 99-04 bikes had the horns in these positions.
So, I loaded up my BMW REPRom and it shows both horns being on the left side, one stacked above the other (configuration for 05-09 models perhaps?). However, I can't find two on that side visually or by feel. The second one may be up in the fairing too far to reach with my size paws.
So, my first question is: can anyone confirm the physical location of the second horn on a late model LT (mine is 2007)?
I then decided to check the fuse. Since the horn makes some noise, I assume the fuse is good, but thought it might be corroded of such. The REPRom doesn't show the fuse locations. As I recall, BMW had a second CD just for the electrical schematic and the dealer never told me that when I bought the bike. The Clymer manual appears to be both inconsistent and wrong as to the horn fuse location. This isn't surprising as my manual was printed for only up to 2005 models and mine is later than that.
The fuse box diagram on page 311, figure 78, shows the two fuse boxes that look like those on my 07, but the #4 fuse in box 2 (right side of the bike - crank side) that is labeled as being for the Horn, brake light and alarm system isn't. I pulled that fuse and the horn still makes its feeble noise. I then checked the schematics and it shows only the older schematic for the models prior to 05 that had three fuse boxes with 4 fuses each rather than the two fuse boxes with 8 fuses each as on my 07.
So, my second question is: does anyone have a schematic for the later models that identifies which fuse is in the horn circuit?
I am hesitant to tear into this since I need to leave no later than Sunday morning for CCR. On the other hand, it seems unlikely that both horns would fail at the same time, so I am wondering if there is a common wiring issue such as a mouse having chewed wires of such during the winter (I am pretty sure the horns worked when I returned from my around the USA ride last September). If I have bare wires in the bike somewhere, I hate to head out for a long trip and have other things start going flakey or have the LT catch fire. Although, as long as I could get the bike pulled over and stopped in time, a good fire wouldn't be so bad!
If anyone has a picture of the naked nose of an 05 or later LT, I would much appreciate seeing that. Thanks!