I ordered the standby switch wiring harness to replace the one that was deteriorating in my 1968 Gretsch Chet Atkins Tennessean. Along with a set of TV-HTS and the installation kit, my Tennessean is resurrected in all it's twangy glory. I highly recommend the installation kit. It's a little tedious and required some patience, but I have a hard time seeing how you could get the components installed without it. All in all, the harness is top quality and a huge time saver-the only soldering required is the pickups.