The sills, I got the screws I could out...the others weren't quite so co-operative ...how are you supposed to get them out when there is like an inch between them and the seat, and the screw is recessed to far for a right-angle driver?
So if all I want to do is run the wires, I should be able to pull the back seat up, without unfastening anything?
As for the battery wiring, I have it through the firewall, I was mainly interested in where you mounted the fuse...or if you left it flapping .