Are you talking about 1dual volt meter or dual meters as in two. If you are taking about the true isolator and meter then You can hook the meter up that way and it will work but you don’t want that because it will be on all the time. The purpose of the neg relay is to create a switch to connect the ground only when key is on. As for the on off on. You need a seven pin switch.
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I am referring to two (2) volt meters. I guess I can still make the relay work? Using both green wires going to the "-" on each volt meter. It then says to connect the red wire to a switched ignition? Where should I gain this source?
The pic for the switch is great! Where can I get that switch? Name please?
Can "Power from 2nd battery" come from secondary fuse block or straight from 2nd battery?
Does the "output to the Stinger" go to one of the small posts on the Stinger with the other small post going to ground?
Does "Power from key on" come from factory fuse accessory (5th fuse down - 15 amp)?
As you can tell I am not real savvy about this and confusion has set in! Thanks for your patience and help!!!