Organizing wiring is a mundane and tedious task, but very necessary for a proper install.
This stuff always haunts you later and you end up having to go back and troubleshoot if the original wirning was done in a sloppy manner.
Another thing to keep in mind is where to route wiring. Gotta consider places where people may step or plant their feet, as well as avoiding areas where wires can get pinched. For the driver side, avoid the pedal assembly and steering column.
