Quoted from the Vulcan Verses:
Spark Plug Wires and Ends For the VN700/750:
You should consider buying NGK plug ends if you haven't already. They are great looking and my directions are based on using them.
Dennis Kirk: or 1-800-328-9280
2 Part# 20306 - XD05F Spark Plug Cap $3.30 a piece.
2 Part# 20789 - NGK Spark Plug Cap/LD05FP $4.80 a piece.
Grab yourself a roll of 8 mm non-resistor type wire from your local auto parts store or speed shop. They may have to special order it. Even a 50 foot roll costs less than the Kawasaki replacement option. I chose bright yellow... Looks good on my black and red bike IMHO.
Here are the wire lengths you will need:
2 x 11.5" long 1 x 14.5" long
1 x 20.0" long
Measure your old wires to make sure it'll work. If you can get 60", you should have some to spare.
I cut my wire with a sharp scissors and stripped off the yellow insulation so that the wire slipped into the coil easily. If you can get it to slip into the coil with the yellow intact, that's even better. Take the rubber "O" looking thing along with it's plastic cap (if intact) and use them on this new wire. I had to squeeze the wire into these "O" shaped holders on the coil end with a very small screwdriver. I pushed the "O" onto the wire as far as I could (about 1/10 of an inch) and then "stuffed" the yellow insulation under the "O" thing. This "O" thing holds the wire in place along with the cap that screws onto the coil. Obviously, put the wire all the way into the coil with about 1/8th inch of room between the "O" thing and the edge of the coil. Then use the screw cap to tighten the wire down and into the coil. The plug ends "screw" onto the wire if you buy the NGK I told you about. Just make sure you have the proper parts at hand and already slid up the wire before you do this or you will have to unscrew the ends and start over. The "short" ends have a tighter rubber seal that is a pain in the tuckus. Be prepared to work that baby on by hand for a bit. Some people use dielectric grease to make it slide better.