Ive used the Radio-Snack wrapping wire,and while it is a little large for an older oem/7-8mm plug wire,it looks awesome on more modern drag motors,like R-M's Top Fuel dragsters and funny cars.There is a chain of 'Michaels arts and crafts' stores in my area,and they carry a black insulated 26 gauge(supposedly)wire,that is almost the exact same diameter as the Shack's red white and blue.This stuff works good for 3/8 or 1/2" rubber fuel and oil lines as well.Im still looking for the 30 gauge too,if I come up with the right stuff,Ill definitely post it here.Later-Lew.