In the frame-up restoration of my '75 Ironhead
I was concerned with a bunch more (OK, two)
loose wires strung under my motor, alongside
the frame, along with all the other stuff there
now: two oil lines to the cooler, one to the pump
and the wire to the oil sending unit...so I was
hunting around for something to use as a sheath
to make up a 2-wire harness from the regulator
back by the battery to my generator.

I didn't want to wrap it with electrical tape or use
those horsy split-accordion ones at the hardware
store so I found an old black 3-wire utility cord,
cut about 3 feet off to work with, peeled back a
half inch or so of the cord sheath, clamped the
exposed wires and rafia core at one end into my
vise and worked the sheath off the wires like a
snake skin.

Start with any longer piece of cord and there's too
much friction between the wires and the inside of
the sheath. I fed a straightened wire coat hanger
through the now hollow sheath, taped my 2 wires
to the hanger and pulled everything back through.
Voila, a durable, black 2-wire harness. I'll use the
left over bits to make mini-sheaths to clean up the
crapola rat's nest that's now poking out the rear of
the top frame tube where the fuse blocks live.

Ironhead Fred and his Rocket X1
     San Jose, CA