Blitz Oil Pressure Gauge

[pshht]

Just getting a few things sorted out on my new car, just wondering if anyone has a wiring diagram or could help.

On the back of the gauge there are 7 wires:

(black, white, red)==> these plug into the oil sensor thingy in the engine bay

(yellow, red, black)==> i think they are for the gauge lighting, so they are wired up for that purpose

(orange)========> dont know where this is meant to go???

The gauge lights up, but doesnt register the oil pressure. Could the orange wire be the missing link or should i be looking for something else?

Cheers

Ben

[pshht]

anyone?