coil

AutoZone can test the coil (and ign module too I think). As far as plug wires go you'll have to ohm them and wiggle test while ohming...or you could just change them. I'm sure someone will post a do it yourself method.....AutoZone does test them free of charge tho.

caspers coil and module tester. I think now he offers a mod to include the plug wires in the loop as well.

Ohm and wiggle is a good mantra, tho, for the wires.