Golden Age Pre-wired Harness for Gibson ® SG ® | stewmac Premium Wiring Kit for Gibson ® SG Like many newer Gibson® SG® owners, I bought the Golden Age Pre-wired Harness for Gibson SG to replace the tone-sucking PCB pot and cap contraption that Gibson has been installing in the past few years. This StewMac harness lives up to its promises. The upgrade is totally worth it and greatly improves4.5/5(22)Price: $89Brand: CRLAvailability: In stock Amazon: gibson sg wiring harness Amazon: gibson sg wiring harness. Golden Age Pre-wired Harness for Gibson SG with Push-pull Pots. $134 $ 134. 11. FREE delivery. Only 4 left in stock - order soon. Greenten Wiring Harness Prewired 2V2T 3-Way Toggle Switch 500k Pots Jack for Gibson LP Guitar Replacement.