Jazzmaster Loaded Pickguard

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The ultimate way to experience Lambertones.

Below are specs and explanations of the wiring harness included in our unique Lambertones loaded pickguard designed for the Fender/Squier Jazzmaster models using a rhythm circuit.

We've partnered with the best in the business, 920D Custom, to build the ultimate custom Lambertones wiring harness to complement our pickup sets.

Harness Name: "JMH" Jazzmaster Wiring Harness w/Rhythm Circuit

Works with: "the Crema" for JM Set & "the Ristretto" JM set



1 Volume, 1 Tone (not including the rhythm circuit)


  • 920D Custom Vintage Cloth Wire
  • (2) 920D Custom 450G Series 500K Pots by CTS
  • 920D Custom / CTS 270 Series 1 Meg Solid Shaft Linear Roller Pot
  • 920D Custom / CTS 270 Series 50k Solid Shaft Linear Roller Pot
  • Switchcraft Right Angle Toggle Switch
  • Switchcraft On-On Slider Switch
  • Pure Tone Output Jack
  • Orange Drop Capacitors
  • Mounting Bracket for Rollers
  • (2) Black Metal Roller Knobs
  • Comes installed on a laser cut plexiglass "pickguard' (still requires original/oem fitting pickguard for installation)
  • Made in USA


    Switch Positions:

    Position 1 - Bridge

    Position 2 - Bridge/Neck

    Position 3 - Neck

    Please note this harness only works with offset guitars designed with a rhythm circuit in the upper horn. 

    Tested and verified models: 

    Fender American Original Series, Fender Road Worn Series, Fender Classic Player MIM, Squier JMascis