5 quick operation and Maintenance Qs

You can use just about any wire, including "bare" at the coil so long as it's "suspended" in air far enough not to arc to ground or other components.

"For just checking" you can use about anything, including a plug wire and plug.

The reason I like to use a grounded clip lead is this means the clip lead is not gonna shock the ess ech eye tee out 'o ya