If you buy an aftermarket voltage gauge, they generally come with instructions on how to wire the connections. Follow the instructions and you should be fine. Your 110 amp alt. is overkill as Jerry said. Those two connections are not for a voltage gauge, That is for the wire harness that connects to the internal voltage regulator. Are you sure the alternator you have is a one wire alternator?


Tommy
59 apache 1/2t
261 short stepside