Pissed off with motor, want to change

How do I ground a wire without pulling it off?

Sometimes you have to pull it off, have a ground probe right there to stick in the wire

The best way IF YOU CAN (on older 7mm wires) is to stick small brands down into the dist towers beside the wires. Then you can just ground 'em.

I realize that the newer dist cap/ wire setups make this more difficult.

If you MUST pull a wire off, ground it right away.

By the way, an open, ungrounded wire CAN KILL an ignition box. Some systems are worse than others.