gretsch wiring harness | eBay Save gretsch wiring harness to get e-mail alerts and updates on your eBay Feed. + Items in search results. SPONSORED. 920D Wiring Harness for Gretsch Electromatic w/Quick Connect. 1968 Gretsch 6071 Bass Wiring Harness Guitar Pots Switches. Pre-Owned. $199. or Gretsch Wiring Harnesses – 920D Custom Upgrade you Gretsch Electromatic with TV Jones Classic Neck and Bridge pickups + a complete premium 920D Custom Shop wiring harness. The harness and pickups have been fitted with Molex "Quick Connect" connectors for easy installation. Also includes adapters that will allow the pickups to be mounted in the newer Gretsch pickup rings.