I ran what NFURY8 has in his hand. I had an 18 slot keyed 12v ATO block on the firewall by the heaterbox and replaced the factory unit. I had alot of accessories. Ran a smaller 6 slot ATO for the constant 12volts. Dont forget to put a cover over the wiring and label everything. It was a PITA to crawl uner when you blew a fuse but Its the place for a 70 A-Body.......The B-body's.....You can hide in the kick panel.