Originally Posted by vettman
Now to get ambitious and hook them up. How about the volt meter, should I come off the alternator, battery or fuse block?
I guess that's your choice, just be sure that it is correctly fused and wired. For any monitored circuit that is not controlled by the ignition switch, you'd also need a relay or other method to shut off the gauge when the ignition switch is off.
Unless there is a specific reason to do otherwise, I would take the easy way out and wire a simple voltmeter in the interior. The dash is full of wires that carry keyed battery voltage and are already fused.