[Matta0413]

Have a 2002 31 Open. Went out for a ride the other day and the gauge for my engine battery back was reading 10 volts. Swapped gauges and the problem did not follow the gauge. So the issue is somewhere else. Before I break my butt trying to swap alternators I want to trace the wiring to the gauge. On the back of the gauge there are yellow, blue and one red wire. The red wire is the one that sends the signal to the gauge but when I look at the back of the alternator thee is no red wire so the voltage reading has to be coming from some place else. Is the gauge wired to the voltage regulator? I am thinking I may have a fuse or something that maybe blown as the gauge went from charging to dead in one trip. Thoughts?