I use high flex wire for multimeter test leads from the coil to the distributor. It has dozens of strands of very fine wire, and doesn't break at the terminal ends like normal primary wire. That wire is available on Ebay in a couple of insulation colors, usually red and black.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!