has anyone managed to wire in a PZracing geartronic GT300 gear indicator to a 749 / 999? I have 4 wires, red (to switched 12v), brown (to ground), Blue (to tachometer) and green (to odometer). I have a wiring diagram but I cannot find which wires these 4 need splicing into. I presume they splice into the wires at the back of the dash but does anyone know which colour wires I need to splice each one into? Thanks in advance.
