I backed out of a parking spot and all of the power in my 1988 IROC shut down. I had the fusible links replaced and they look good, but still no power. I checked the main fusebox under the dash and the fuses were good. Are there any other areas that I should check before I give up and send it to someone who probably knows more?

Did you check the battery? Sounds like a cracked cell in an old battery which is usually immediate death.

Loose or broken battery ground will do this too.