DiMarzio GW2104 SG® Wiring HarnessThe heart of this drop in prewired harness for SG style guitars is our custom designed 500K potentiometer. First introduced over 45 years ago, we used a 10 step rotary switch to create a taper that works with DiMarzios high impedance pickups. Its neither a linear nor audio taper pot it's DiMarzio's custom taper. To further increase reliability, we make the center shaft and threaded parts from solid machined brass instead of cheap castings. Our kit