Wiring behind center console

[M_Thrasher]

Hey everyone! I have recently imported a 2000 RSFour Stagaea,  and in the center console I have the climate control at the top and a double-din aftermarket stereo below it.  This is how it came when I imported it.

I am hoping to wire up an OEM triple gauge pod (battery/torque/boost) which I have seen in a few pictures of other people's Stageas, so I ordered one supposedly from a stagea.

Behind the stereo I find an unused  brown plug with 4 wires, Brown,Yellow,Green,Black/pink.  I assumed this was the plug for the gauge pod, but its a different shape and not long enough to reach.  

The voltages on those wires are:
Brown - constant - 12v, 14v while running
Yellow- switched 4.7v when on and running
Green - switched 12v when on, 14v when running
Black - switched 12v when on, 14v when running

Pressing the accelerator pedal doesn't seem to affect these voltages either, so I don't think any of them relate to the boost gauge.

Does anyone know what the OEM gauges should be wired to?  If the car didn't originally come with one, should I expect to find wires available for it?   Any idea what this plug is for?

 

Thanks,

 

[Stick180]

The factory boost gauge gets its reference from a sender in the engine, near the BMC.

 

I don't know why you are bothering fitting a factory triple gauge as the are pretty inaccurate.