.. this is as good a reminder as any to ask a question that perplexes
me from time to time.

If pickups on electric guitars are conventionaly grounded to a metal part of the bridge
or tailpiece to minimise noise interference [ & risk of elecricution ?].

How is it ok that magnetic pickups can be just be temporarily fixed to the soundholes of acoustic guitars
without any need for similar grounding.

Does that mean, any electric guitar pickup that can be bodged to fit
a soundhole can be used, and the ground wire just taped off;
or even an electric guitar might work just as well if the ground wire to bridge became accidently unattached ?

The main reason I ask this, is I aquired a 'jazz' humbucker that screws to sides of the end of the neck
that I eventually intend fixing to a cheap archback. I'll need to feed the wires through an F hole
and drill in a jackplug, but not sure if I need to
take the humbuckers ground wire and drill another hole to solder it to the metal tailpiece ?

thanks.