What approach do you use, cut to length and final terminate wire by wire as you go; or temporary terminations to verify operation, then go back and cut to length? Seems that leaving the wires long is going to be a mess and waste a bunch of terminations, but it may be a necessary step? For example, with my fuse block location (up high behind dash, driver's side) my conductors to the steering column plug need to be shortened about 6" to 10" to be neat - my temptation is to cut them wire-by-wire, staggering butt connectors to eliminate bulk now vs getting it all wired and going back to do this later. Same in the trunk - about 8' of extra conductor on each circuit that is going to have to be cut out at some point.