Need help with TechEdge Wideband wiring LA1 gauge.
 

Posting here since it is an Australian product!
I have the Tech Edge WBo2A and a LA1 gauge.
The gauge has a connector on the back that goes into the controller,but it also has 4 wires.
I need to know what the 4 wires do,.
Colors are black,green.blue and orange.
I tried contacting the company but have yet to get a reply.
Anyone help?
Thanks immensely Guys.STYX.