On my 5000 S Quattro that I just have started getting on the road, standard trans, the ashtray has a vac line loose, with nothing connected. The Quattro controls are right above the ashtray, and the gear shift is right behind it. Quattro controls have no lights, and don't notice any changes when I turn the control to 1 - 2.

Also, dash lights are out, interior lights out, gas gauge is intermittent, and driver headlight has burnt out on lo-beam. Any ideas? Loose Ground, problem with the instrument cluster circuits/ soldering?