Did you get any wiring loom with it, I'd expect at least a set of tails for the meter
Nope nothing… I’ve contacted the seller but not heard anything back
You should have some diagram or a loom or you have a chunk of detective work ahead.
Both the USB and the Meter will be sensitive to voltage and without any instructions you'll need to assume they are not protected against reverse voltage.
The switches look like they might have indicators in but again with no info you'll have to guess. They're probably LED but they could have a resistor built in for 5v or 12v use or you may need to add an external resistor.
If you've just bought maybe return it and get something from a seller that supplies at least basic info but ideally a loom?
This listing on Amazon might provide some clues, at least it shows the tails for the meter that I would have expected as a minimum
Both the USB and the Meter will be sensitive to voltage and without any instructions you'll need to assume they are not protected against reverse voltage.
The switches look like they might have indicators in but again with no info you'll have to guess. They're probably LED but they could have a resistor built in for 5v or 12v use or you may need to add an external resistor.
If you've just bought maybe return it and get something from a seller that supplies at least basic info but ideally a loom?
This listing on Amazon might provide some clues, at least it shows the tails for the meter that I would have expected as a minimum
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