After many trials and tribulations I have finally replaced the heater core in my beloved '89 765t. I have heat to ward off the coming chill of a Minnesota winter. My current issue is that while putting everything back together I have found that I only have lights on half of the instrument panel, and none of the accessory panels except for the climate control unit. As near as I can tell, the lights are all powered by a black/brown wire and a white/yellow wire. There are two different plugs in the back of the instrument cluster that have the same colored wires but without a diagram I'm really not sure what is going on. I've swapped known good bulbs around, so it seems like the lights that aren't on just aren't getting any power.

Anyone have a good idea on how to troubleshoot this, or can anyone point me in the direction of some good wiring diagrams.

Thanks for any help!
-Eric (only half in the dark)