PRS 4 Pot Wiring Diagram & fitting Instructions PRS 4 Pot

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2 x Humbuckers, 2 x Volume, 2 x Tone and 1 x 3 Way Toggle Switch

Complete Electrical Fitting Instructions


  1. Find somewhere safe, dry and secure to place your PRS 4 Pot guitar while you work on it.
  2. Remove strings.
  3. Remove the control knobs x 4 and the switch cap.
  4. Remove the 4 x pot nuts and washers and the nut for the switch.
  5. Remove the screws x 4 for the pickup surrounds.
  6. Undo the screws that hold the control plate and the switch plate at the back of the guitar.
  7. Undo the nut for the jack socket.
  8. In the control panel, cut the wires from the switch and the pickups closest to the pot as possible.
  9. You should now be able to gently remove then pickups and the switch.
  10. The wiring harness should be free to come out and so should the jack socket.

Please note: if you are not replacing the pickups or the 3 way switch you won’t need to remove them or the strings.


  1. Fit the new switch into place and thread the wires through to the control panel area. A tip is to label them as you won’t know which is which. I normally put a small piece of masking tape on the bridge wire.
  2. Replace the pickups – or fit the new pickups threading the wires through to the control panel area. A tip is to label these too.
  3. At this point you may want to clean pot holes on the front of the guitar from where the old pots have been.
  4. You will need to check the size of the holes for the pots as on some guitars they are drilled small for cheap electrical components. If they are small, the best way to enlarge them to 10mm to fit CTS pots, is to use a round file.
  5. Fit the new harness into place.
  6. Solder the 2 switch wires to the pots and the jack socket (refer to wiring diagram)
  7. Solder the 2 pickups wires to the pots (refer to wiring diagram)
  8. Solder the ground bridge wire to the back of the pot (refer to wiring diagram)
  9. Once this is done, you should test to make sure everything is working. 
  10. You can now replace the switch cover and the control plate cover
  11. Re-fit the control knobs and the switch cap.

Tools & Equipment

  • Philips (Cross head) Screwdriver.
  • Flat headed screwdriver on some models.
  • Small adjustable spanner/wrench.
  • Good quality soldering iron.
  • Wire Cutters.
  • Masking tape for keeping things in place or out the way while working.


  • When soldering the wires to the back of a pot, do not overheat / cook the pot.
  • Keep wires tidy and neat and make sure all components are grounded.

PRS 4 Pot Wiring Diagram & fitting instructions