[mechanicalbrain]

I'm planning our general electrical system and I have two quick questions.
First: Ive been playing with running cable along a frame and I have had great success running cable in our frame (Its non metal and has proper stress releases). So my first question is "realistically what effect does excess wire have?" Ignoring weight gain and assuming you had it properly protected from being yanked, does the excess of cable have any real (not in theory) loss to the entire system and has anyone actually experienced such a negative effect. I want to run cable along our frame or in it because we had trouble with cable getting pulled.
Second: Since i wrap everything in a nylon sleeving i can't easily trace wires (nor do i feel the inclination to). I would like to mark the connectors in a way that i can tell what type of component its powering and a abbreviation for the component (ex mtr1 for motor 1). "What do you recommend and what have you seen that is particularly cool?" Ive already seen all the pictures of various systems on CD and i was thinking a colored power connector (if they make some that are aesthetic and not indicative of gauge). of use some type of tape to connect wrap around the wires. Ive heard something about the Inspectors making you remove such tape though and I want to be sure its ok.