Amazon 12vdc Panel Meters
HERE
Amazon 120vac combination Volt / Amp Meters
HERE
the AC panel meters are easy since they have an inductive current/amp pick up...all you have to do is slip the inductive pick up over one of your AC Volt hot leads and you're good to go...if you have 50a (like i do) you'll want TWO meters (one for each 120v 50a leg) so you can monitor both legs.
you can see the inductive pick up in these
pictures
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Don R.
'04 Haulmark (M42386) 42', 2 slide, 10kw -
Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over