Wiring bundle sizes? - engine bay

[Jonk67]

Hi all, I want to pick up some wiring sleeving at McMaster Carr while I'm passing through ATL for work.
What is the general thickness of the wiring harnesses in the engine bay > main harness heading down the drivers apron, headlight wiring at the front frame rail, alt/VR wiring harness along the front frame rail,etc?

I just need a thickness to buy some sleeving to slip over them as it comes in 1/4", 1/2", 3/4", 1", etc. I don't want it to be too small or obnoxiously large. I'll probably pick up a few 3ft. lengths of a couple sizes but don't want to get 1/4" if it's too small to fit any or 1" if it's way too large. Forgot to measure before I left the house Mon.
Thanks, Jon

 

[Midlife]

As the light harness progresses along the driver's side and then down and across, various wires feed out of the harness. Thus, the harness diameter reduces in size along the way.

 

[Jonk67]

Any idea what size it starts at? ~1/2"? I just need a close guess for inner diam. of the sleeving I'm getting and it self closes but doesn't seal so the wires can still exit the sleeving at any point.
Jon

 

[Midlife]

The light harness starts out at a touch under 1/2", but foglamps and washer pumps add to the diameter. I'd go with the 3/4".

 

[Fast68back]

I bought the powerbraid stuff from Painless

I orderd 1/2 and 3/4 and used both in my engine bay.

http://www.stangfix.com/testforum/index.php/topic,1303.0.html

This is the 1/2

 

[Jonk67]

That's what I'm looking to do Rick, where'd you use the 3/4"? heater hoses?
Jon

 

[Fast68back]

I used the 3/4 under the solenoid where the wires are larger diameter. Maybe 12 inches or so. I'll see if I can find a picture of it.

These are the wires I have in the 3/4, I still have quite a bit of it left. Couldnt find a picture of them wrapped.