This is a pre-wired harness for selecting between two pickups on an electric guitar. It includes a volume and tone pot with knurled chrome knobs, a 0.047uf capacitor soldered to the tone pot, and a 3-way selector switch. All of the components are mounted in a nice mirrored chrome mounting plate, for easy installation into your guitar, cigar box guitar or other instrument.
By using a pre-wired setup like this takes all of the guess-work out of a more complicated pickup assembly. Just install your pickups, connect the leads to the correct points on this component, install your output jack, and you're good to go.
Using this item does require some wiring & soldering. The positive leads from the pickups get soldered to the left and right lugs of the 3-way switch, and the ground leads get soldered to one of the black leads (doesn't matter which one). The other black lead and the white lead are soldered to the output jack.
Both pots in this harness are 500KOhm.