I just bought a new mini starter, my old starter finally went south on my '73 K5. Besides the positive battery cable there are 2 other wires. A 16 gauge wire that activates the solenoid and a 12 gauge wire. My old starter had connections for both other wires but the new starter has only one besides the main battery wire. The starter wont turn with only the one wire connected. What do I do with other wire? Any help would be much appreciated!!!