Installation: Simple, but does take a couple of hours. Pull the seat, tank and shrouds, drain coolant, pull spark plug lead, and headlight/number plate. For now, I wired directly to battery, but there may be an available fused connector. The manual says to wrap 10 turns around the spark plug lead; I got only 5 or 6 and the tach works fine - so make sure you route the wire reasonably short so there is enough wire to do the wrapping. The coolant temp sensor mounts in the large tube that runs from the front of the motor up to the top of the left radiator. The speedo sensor gets screwed into a 1/8" hole you drill into the aluminum caliper adapter bracket. The installation photo for the Endurance computer at Trailtech's website gives a clue about where to mount it. I sighted mine in and picked my own "optimum" location. Operation: I gave my Vapor the acid test in the rough, whooped-out, tight woods at Rampart Range (it was very dusty, then it rained - it functioned properly all the time). The rpm bar graph can be seen periferally while riding, but that's about all except for the warning lights. But who stares at the speedo while riding? The coolant temp works great. It's interesting to see how fast it goes up while idling or climbing slow steep hills. It peaked at 267F when my bike was blowing major steam when I got stuck on a nasty pitch. Complaints: (1) ambient temp gauge response is too slow and essentially useless. If bike was out in sun and gauge reads 112 when it really 85, then start riding, it takes like 20 minutes to creep down anywhere near the right temp. If it is even partly cloudy, it still reads too hot by 10-20F. The sensor must be buried too deep inside. (2) I think water temp is more important than ambient temp and should be shown on screen 1 with the tripmeter where both can be seen continuously. It is on screen 2 with digital rpm, which seems of little value since the rpm graph is already on both screens anyway and there is no practical way (or reason) to read digital rpm while riding. It is easy to toggle screens, but it would be nice to have the most important info on one screen. Other than the ambient temperature, it functions well and provides a lot of info.