you need to run speaker wire up to the head unit where you'll tie the speakers in. Then
you'll need to have the head unit flashed by dealer for 8 speakers and amp1 and amp2 turned off and to enable the fader control. I do believe the rear outputs on the radio are active, just the fader is not enabled.
The pins you'll want to connect to are located on the main harness that plugs into the back of the radio.
Pin H1 - Light Blue/Grey - Left rear -
Pin J1 - Light Blue/Orange - Left rear +
Pin K1 - Light Blue - Right rear +
Pin K2 - Light Blue/Black - Right rear -
A forum community dedicated to all Harley-Davidson Road Glide owners and enthusiasts. Come join the discussion about performance, builds, accessories, mods,specs, troubleshooting, maintenance, and more!