I just bought a 1996 chevy sportvan g-10 I believe. It's a 1500. The van has the rear power bench seat but it is not bolted down. Also not connected to power. I can seem to find where the bold holes are in the floor to bolt it down. Also the power cable is disconnected. I found two wires that match the seat wires. Pink and orange I think. I opened the panel fuse box behind the driver seat and 3 wires were disconnected. I plugged in one that had power to it and connected the wires on the rear seat. When I tried to power the back seat to open or move, it seemed that only one motor was turning. I'm lost and need any help, please. I would like to get a book on the wiring so I could maybe fix this.

Thank you in advance