[thatch]

Rob,
To actually start your engine "at" your engine you will need 2 jumper wires, preferably with alligator clips on each end. If you just want to turn the engine over for compression testing you only need one jumper wire. To engage just the starter connect one end of the jumper to the terminal marked "S" on the starter solenoid and then touch the other end to the battery terminal on the the same solenoid. This will engage the starter as long as the connection is maintained. To actually start the engine you will have to first connect a second jumper wire from the + terminal on the ignition coil and then connect the other end to the large battery terminal on the starter solenoid. Then momentarily connect the "S" terminal jumper as I described before to start the engine. Bear in mind that when you hotwire the coil you are also backfeeding any guages or other accessories that come on when you turn on the ignition switch normally.
I hope that I've described the process clearly enough, if you have any questions i'll try clear them up.
Tom