Wilsons Sandbox

I did this for minimum work and maximum ease, all wiring and mounting of components etc. is done immediatly behind the horn area, so remove the side cover to gain access. A picture is worth a thousand words, I have no way to post a picture so hopefully you can draw your own circuit on paper. I don't know the abilities of those reading this so I will try and give maximum information. Try and draw this circuit, starting near the top left of a page, write +12V from Hot side of Fan fuse, draw a short line down vertically and draw kind of stretched out S an inch long, mark it 10A fuse then continue to draw a 2" line down vertically draw a Switch mark it Disable, from the other side of this switch draw another line down and draw a square box and put a letter M in it, mark it mercury switch,from the bottom of this box draw another line down and draw a coil and the bottom of the coil mark it ground. Beside the coil on the right put 2 small circles one above the other, these are the relay contacts. Draw a wire from one one of these to the Horn BK and the other connects over to the relay coil ground point. So, looking at the circuit you just drew, it has +12V from the hot side of the Fan fuse through a new 10Amp fuse then to a disable switch then through the mercury tilt switch and through a relay coil which is connected to ground. When the disable switch is on, if the mercury switch closes when tilted the power goes to the relay energizing the coil and closes the relay contacts. Now go back up the top of the drawing and from the bottom of the fuse draw another line horizontally over to the right and mark it to Horn BR-remove BR and tape out of the way, its no longer required I used standard automotive connectors and wire, salvaged the mercury switch from an old thermostat, the relay is any small automotive SPST relay with 5A contacts, the fuse is similar to the fan fuse. 1. identify the hot side of the stock Fan fuse by removing fuse and measuring for +12V, connect the new fuse here(I soldered mine) 2. I installed the miniature disable switch on the tiny V shaped wedge of plastic that faces you when you look from the side of the bike across the face of the horn grill, I figured no one would know what it was(except everyone reading this) you could hide yours. 3. remove the BR wire from the horn and tape it out of the way and connect a wire from the fuse to here, also another wire from here to the disable switch. 4. My mercury switch had a holder which I strengthened with silicon seal and a short length of the bimetal strip it was attached to which I straightened out and inserted into the rubber slot holding the fan relay, you will have to figure out how to mount your mercury switch and adjust it for proper angle and performance. 5. Remember to leave the BK wire on the horn but connect one of the relay contacts to it, Now the Horn button is live with the key off, I never figured it was a problem, but when the bike is tilted up off the sidestand the horn blows.....works slick for me. My only thought is maybe the mercury could break into small droplets with vibration and time, making the switch useless....time will tell. GOOD luck,,,,feel free to ask any questions if I missed anything, its as simple as I could make it, you could keep the Horn stock so it works only with key on, but it adds another level of what I think is unnecessary complications. I am thinking of adding a touch switch and connect to the relay coil, then if anyone touches the bike it blows the horn....I wonder if a dogs sniff or maybe peeing on the tire would blow the horn>>???