I have the actual gauge part on. The problem that I have is that on the power inverter there are 2 wires. 1 red 1 black. I can't figure out where they are supposed to go. I got this kit off of ebay for 6 bucks. So yea there are no directions.
What Urban said...I would run the Red to a "switched" power wire so you get lights that gone on and off with the headlights...I happened to get power from a parking light power....this way I get "switched " power...