Kit needed for gauge

  1. #1
    i brought a gauge kit and not all of it is there so i need to source my self the rest but unsure of what else im going to need.
    i have rpm - got just 5 wire on the back.
    oil - got 5 wires and an oil sender http://cgi.ebay.co.uk/GOOD-QUALITY-C...d52985ffe0bb77 thats all ( i need nut for enfine ect ?)
    water - just got a button connected to a block of batteries ? think this is to just change dial colours ? only on this one though

    http://cgi.ebay.co.uk/AUTO-GAUGE-OIL...d52985ffe0bb77
    i need this right, what else do i need ? do i need 2 of these one for the water one for the oil ?
    thanks