Listen Up | Biketronics Bagger Audio Upgrade

09. Next, James followed Biketronics' instructions of orientating the speaker adapter so the decal was at the 12 o'clock position and only used the three indicated screw locations to secure the adapters.

10. He then orientated the speakers so that the terminals faced toward the instrument housings and secured the speakers to the adapters with the four screws that were supplied.

11. Next, the RetroRadio kit module was plugged into the black 23-pin wiring harness that would normally plug into the stock stereo. Made in-house and cast in mil-spec epoxy for durability, this module is what makes installing the Sony head unit a simple plug-n-play install.

12. The supplied wire harness with the black connector was then installed into the back of the stereo and then

13. ...the other end of that harness was plugged into the white connector coming off the RetroRadio module.

14. The RetroRadio module was then zip tied in place. Aside from plug-n-play installation with the Sony stereo, Biketronics has modules for other aftermarket stereos as well. The module also allows you to maintain your stock handlebar audio functions and has a Biketronics-exclusive Automatic Volume Control, which will raise or lower the volume as you speed up or slow down. This way when you pull up to a stop sign people won't know you were just blasting Britney Spears (yeah we know it was on your wife's iPod).

15. Next, James plugged the black cable with 3mm jack into the back of the stereo and followed Biketronics' instructions of making sure the cable pointed straight up.

16. Installation of the amp was next. James peeled the adhesive strip backing and mounted the amp on top of the stereo. Biketronics recommends this amp with its speaker upgrades for those who have the shorter or stubby windshield. The company says to try riding on the freeway without the amp first, and then if you feel you still can't hear your speakers as good as you'd like, you should then add the amp.

17. After following the instruction for hooking up the amp, James connected the speakers.