My 240D only came with a drivers side rear view mirror. So I went out and looked and found a power passenger side mirror as well as a power mirror switch and connector on E-bay. I'm by no means knowledgable in wiring things together, but figured how hard could this be. I figured I could just connect the same colored wires from the switch to the mirror and then find a power source & ground. No such luck! The power mirror has 3 wires Grey, White & Black. The switch has 2 brown wires, black, white, ( I was doing this from memory and forgot the other 2 wire colors) anyhow, I assume 2 of the wires go to power & ground (looks like brown & black). That leaves 4 wires to connect to 3 wires . . . Arrrrrrrg!
From my poor description, can anyone help? If someone knows how these wires should connect together, please share the knowledge.

__________________
1981 240D, Auto Trans, 160k miles -- CRASHED!