lol .. well im thinkin its just red and black to connect up, vaccum is not a problem as ive already got a pipe coming thru the bulkhead to the dash.. Now the hard part is getting a live connected to the box.. gonna have to make up some lengths of wire with a connector on the end or something.. I dont wanna go wiring it up wrong... So to confirm. Only the 2 wires. black n red ... need to be connected up.. other wires are for other gauges ? Ive found a diagram/installation pdf for the DC2 but its slightly different Oh and a big thank you to sparky .. cant wait to see this in action myself