I'm working on an LED temperature indicator for my V.
Basically it is a single tri color LED, that will be mounted to the dash.
It will show blue below about 160 DegF, green when in the normal operating temperature, and red when overheating (matching up with normal indicator light). I can possibly make it show yellow or some other color before it goes to red, possibly when the fan comes on. It is very simple, and easy to read. Not an exact number but better than just the light we have now. I am aslo working on making it dim automatically at night.
Working out the coding now (all that freshman year college stuff is coming back, slowly), but hope to have it working sometime in December.
For reference, it would look something like this (Panel mount LED shown on Ninja 650, green one on the bottom.)
You would need to drill a 1/4" hole in the dash, and mount a box about 2"x2"x1" somewhere on the bike. You would need 12V power, and ground, and tap into a temp sensor wire (on the back of the cylinder head).
I'm making one for myself no matter what, and one for a friend, but I was trying to see if there was any interest from others (basically is it worth me investing in having a circuit board made). I haven't finalized it yet, but I'm thinking it would be about $45-50. Anyone interested?