Because the stereo only utilizes the 23-pin harness plug, how will I use my intercom system and CB radio? Aquatic AV June 05, 2020 14:11 Updated Unfortunately, you will lose out on your intercom system and CB radio. Related articles My bike has two harness plugs. Which plug do I use to connect into the back of the stereo? Can I use this Aquatic AV 2-Channel Amplifier for Harley-Davidson to power both the front and rear speakers at the same time? Which bikes are compatible with the MP5+ Replacement Radio? What tuner is compatible with my MP5+ Replacement Radio? MP5+ Stereo for Harley (AQ-MP-5UBT-HS) - Owners Manual Comments 0 comments Article is closed for comments.