91 Buick Electrical -Schematic/ESM

Does anyone know where I can get the electrical schematics to help me install and aftermarket stereo and work on my climate control system? I have the factory service manual but have not found an electrical service manual.

Have you checked ebay? I was able to find my factory service manual there. And about installing an aftermarket stereo, doing so does not reguire any schematics. The aftermarket GM harness connectors needed for installing an aftermarket radio are all matched and color coded for you, to make the wiring very simple! The climate control will be another matter..