Today I installed a Garmin Zumo 390 GPS with TPMS. I also installed a brake light modulator (
SupaBrake-II motorcycle tail light modulators | vizi-tec) -- was plug and play and took 2 minutes to install and I think it's a fantastic safety feature that really gets motorists attention when you brake. I also had a Shorai 18A lithium battery installed today... only weighs 2 lbs and I never have to worry about putting it on a battery tender!
I forgot to take pictures of the GPS installed on the bars (doh!), but here's some pictures of the installation.
Wired it into the Key 2 fuse for switched power. Initially, I tried wiring it into Fuse 1 (headlights), but discovered that fuse must have a bad ground because when I grounded the GPS to the bike's frame, the ground screw started lightly sparking. Baffled, I touched a multimeter to it and the GROUND was putting out 6 volts. Switched my GPS power into Fuse 4 and problem solved.
Closed the fuse box up and cable tied everything neatly.
Where I attached the ground wire.
Tomorrow, going to install a 14T front sprocket!