What a gong show... Turns out I had constant power, needed accessory power. Ended up taking out the dash media unit, uninstalled my new gauges, dug around with a test light for another hour or so... No idea where any accessory power is in that s.o.b... Guess the head unit comes on by magic. Anyway, ended up putting in a rocker switch wired from a DC outlet to use as remote-on, installed permanent usb outlet there, powers OM-1 and Volt meter... Now can kill charge outlet and meters when parked or when not wanted. These new cars are a PIA.