Well here is a little teaser. I went away for a long weekend in WV. While on the trip, my trailer lights began to act up. Bad ground. I just knew it was that. As the trip progressed my speedo started to act a little funny. It looked like it would drop when I shifted my bike. I have a pingel shifter on my '01 Ultra trike, and I know it draws a lot of amps to shift. So a few weeks later the speedo trouble begins to worsen, and now the two lights on the rear fender began to get intermittent. When I would shift or use the breaks, the speedo would go to 0. So now the teaser. What does the breaks, and the shifter, other then using power to operate have in common with the speedo? After some serious spark chasing a bad ground was found in a plug under the seat. That was fixed and the test ride was on. 100 feet later, the test ride was over. The speedo was still not working, but the tail lights were working great. About that time the very dim light bulb over my head began to brighten. We were chasing TWO different problems that manifested them selves at the same time. Very happy to report that a new sending unit for the speedo got me on my way. I'll be up in Gettysburg for bike week 7/13-14/2012 if anyone else is going, drop me a line.