The last time I was at my father-in-law's house I drove his 88 El Dorado to the store one day. After about 1/2 mile, I lost all instrument cluster readouts to include the radio. The car still drove fine, I just didn't have any info.

He has since replaced the electrical power supply which didn't fix the problem. Now he has a body control module/body computer he was going to install, but he has a wiring issue he can't figure out. Does anyone have a schematic for the control module wiring to the vehicle for this car?