The multi meter always shows amps from the alternator. The voltage sense and power to the meter is switched by the 3 position battery test switch and can be turned off like the old volt meter. Here is the STP 3 pair cable I’m running from the Balmar regulator via the bulge pump distribution area. Here I screwed some backing plywood on the panel to be a guide for my hole saw to make the opening bigger for the Blue Sea multi meter. Next I needed to drill holes for the leds and also wire the switch for small engine mode where I can run the alternator at 50% output unless I’m at anchor and really need to charge in a hurry. You will also notice the soldering iron in the foreground. The Xantrex multi wire shielded twisted pair wire is not tined. I had great problems getting this 22awg wire to stay in the screw terminals in the link lite and blue sea multi meter. I needed to tin the ends of the 22 awg wire and then I used heat shrink to reinforce the wire otherwise everything was crimped or screwed down. 22 awg is hard to work with. Make sure you get good stripping tools!