Gibson Wiring Harnesses – Sigler Music Sigler Music Center is a full-line retail music store and has been in business for more than 50 years. Our experienced staff is ready to help you find what you are looking for. Gibson Wiring Harness products for sale | eBay Gibson 50's wiring harness kit upgrade for your Les Paul style guitar. This kit gives you that sweet woman tone fat sound most are looking for. Sprague Orange Drop. 022uF capacitor. This wiring is ready to drop right in but final soldering and assemble is needed.