Mopar I have never did anything of this magnitude but I figured since I was going to wire a Hotrod I might as well jump in feet first .

Don a idea came to mind while thinking of what you are now doing and what I will be soon . I thought of wire ties closed to about a 2 inch circle . Run your first wire thru them to its connection and tape it to wire tie . You can add a tie when a wire jumps off in a new direction doing same thing . Even use multiple ties in a wire run to keep them grouped together . Then as you run more wires to central locations the tie would almost act as if taped in a loom you get the idea . This will keep the rats nest down and the wires in shape for taping .