OK, here's what started it--had two seemingly simple things to do, replace both door jamb buttons so the courtesy and dome lite worked--both plungers broken--and pull the cassette deck for cleaning. Door switches, while a PITA to get out, went fine. I even got the cassette deck out with no problem ---BUT--- I noticed that it's a remote panel radio, and a remote panel HVAC. Rack of relays behind the glove box along with a control box and the radio receiver is tucked up under the dash. These two remote panels are graphic displays with rocker switches.

Does anyone have wiring diagrams for this kind of HVAC and radio system?? I found only one place on the web that even mentioned it but had no info at all, everyone else says cable or round **** HVAC and radio above that.