[rfeenstra]

Eliot, Russ put me on to SOOW cord. It is 18 AWG but is about the diameter of what AK used. I purchased the 6 conductor cable then strip the jacket off to get the individual wires. Unfortunately, it does not come in brown or yellow. The insulation is EPDM rubber. I purchased a bunch from Allied wire.

Just discovered Mouser has yellow and you can buy individual colors. but not brown. Only in 100ft rolls at a $1.32/ft - ouch.