The dealer one is approx $150 and it is just a plug and play. But I found a digitial on from the US which is a simply install as well so I went with it
Also bought off of DooTalk.com, they look great, picked up ambient temp and coolant temp. They came with full instructions and all the wiring, factory harness has wires ready to connect, VERY easy. On the coolant guage, you need disconnect the carb heater line and plug off the hose, so you can use the threaded hole in the head to get the sensor in. it sounds bad, but its no big deal, I had no trouble all last year in the mountains.