Just take one lead of the meter and put it on the + battery terminal, the other lead on the bolt on the starter where the hot cable connects. Not on the cable ends, directly on the terminals. Meter set on 12 volts. Should see zero volts to begin with. Have someone try the starter and watch for a voltage reading. Should be a very low reading if the cables, solenoid, connectors are good. Otherwise you need to back probe and find the bad connection.