Skip to content
SOUNDSTREAM HDHU.14si & HDHU.9813RG ONLY $699.99!
SOUNDSTREAM HDHU.14si & HDHU.9813RG ONLY $699.99!

Diamond Audio Stage 2 Installation Guide | 2014+ Street Glide

Diamond Audio Stage 2 Installation Guide | 2014+ Street Glide
Please follow these installation tips when you're ready to install your new
Diamond Audio Stage 2 Bundle in your
2014+ Harley-Davidson® Street Glide.

If you selected the Stage 2 Bundle + Diamond MSHD14, check out the installation guide for the head unit here!

Installation Video


Tools needed:
  • Fender cover
  • T20 torx bit
  • T27 torx bit
  • T40 torx bit
  • 5/32 hex bit
  • 2mm allen wrench
  • Panel removal tool
Step 1

Remove the outer fairing:
  • Place a fender cover over the front fender. To protect the painted surface.
  • Remove the four T27 torx bolts.
    • There are two located on each side of the fairing.
    • The shorter bolt is lower and long bolt is towards the top of the fairing.
  • Remove the three T27 torx bolts from the top of the fairing.
    • Leave the longer bolt in the middle attached slightly to support the fairing.
  • Remove the windshield.
  • Remove the center bolt and remove the out fairing.
  • Disconnect the headlight connector and completely remove the outer fairing.

Step 2

Remove the Right (Brake Side) speaker pod:

  • Remove the power connection from the bottom of the speaker pod.
  • Disconnect the speaker wire connector.
  • Remove the three 7/16 in bolts holding in the bottom inside of the pod. 
    • These are located near the forks.
  • Using a T25 torx bit remove the two bolts attaching the speaker pod to the tray on top of the radio. 
  • Use a 3/16 allen to remove the three remaining bolts holding the speaker pod to the inner fairing. 

Step 3

Remove the Left (Clutch Side) speaker pod:

  • Disconnect the speaker wire connector.
  • Remove the three 7/16 in bolts holding in the bottom inside of the pod. 
    • These are located near the forks.
  • Using a T25 torx bit remove the two bolts attaching the speaker pod to the tray on top of the radio. 
  • Use a 3/16 allen to remove the three remaining bolts holding the speaker pod to the inner fairing. 

Step 4

Installing your new Diamond Audio 6.5 inch Horn Speakers:

  • Remove the four T25 screws securing each speaker. 
  • Disconnect the wiring harness from the speaker prongs. 
    • You may need to gently wiggle them back and forth to release the spade connectors. 
  • Use the provided crossover, connect the 1/4 inch and 1/8th inch spade connector to the 1/4 inch and 1/8th inch prongs on the 6.5 inch speaker.
  • Using the bare wire side of the crossover and the provided speaker wire pigtail, twist the red wires together and twist the black wires together.
  • Insert the red wires into the red push terminal.
  • Insert the black wires into the black push terminal.
  • Connect the spade connector on the provided pigtail to the factory wiring from the speaker pod. 
  • Insert the speaker assembly into the speaker pod, being sure to line up the mounting holes. 
  • Secure the speaker into the pod with the provided black phillips head screws. 
    • We recommend starting all four by hand and than carefully tightening down with a screwdriver. 

Step 5

Replace the speaker pods: 

  • Place the speaker pods back on the appropriate side of the fairing. 
  • Replace the three 7/16 in bolts holding in the bottom inside of the pod. 
  • Using a T25 torx bit replace the two bolts attaching the speaker pod to the tray on top of the radio. 
  • Use a 3/16 allen to replace the three remaining bolts holding the speaker pod to the inner fairing. 
  • Reconnect the power connection on the right (brake side) speaker pod. 

Step 6

Installing the amplifier mounting plate:

  • Remove the four T25 screws from the top plate located in the center of the top plate over the radio. 
  • Place the provided amplifier mounting plate over top of the top plate, being sure to line up the four holes.
  • Secure with the four factory T25 screws that you just removed.
    • We recommend starting all four by hand and than carefully tightening down with a screwdriver.

Step 7

Installing the MSTLINK harness on a factory head unit:

  • Insert the male factory connection into the rear of the radio.
  • Connect the female main connector to the factory main connector from the motorcycle.
  • Connect the four pin molex connector with RCA's labeled Front Left & Front Right to the Front Input.
  • Connect the four pin molex connector with RCA's labeled Rear Left & Rear Rights to the Rear Input.
  • Connect the four pin molex connector with White & Grey wires to the Front Output.
  • Connect the four pin molex connector with Purple & Green wires to the Rear Output.
  • Connect the provided blue remote turn on wire.
  • Connect the male bullet connector to the female bullet connector coming from the Diamond Audio head unit.
  • Place the other end with the wire ferrule into the REM port on the amplifier and secure using a 2mm allen.

Installing the MSTLINK harness on an aftermarket head unit:

  • Insert the male factory connection into the rear of the radio.
  • Connect the female main connector to the factory main connector from the motorcycle.
  • Use the provided 2 channel RCA's to connect the head unit to the input side of the amp.
    • One end of the RCA's has a tag "To Source," connect this end to the RCA's on the back of the head unit.
      • Red to Red
      • Clear to White
    • Connect the other end of the RCA's to the RCA to Molex adapter.
      • Red to Red
      • Clear to Clear
    • Repeat the process for both the Front & Rear RCA
  • Connect the four pin molex connector with White & Grey wires to the Front Output.
  • Connect the four pin molex connector with Purple & Green wires to the Rear Output.
  • Connect the provided blue remote turn on wire.
  • Connect the male bullet connector to the female bullet connector coming from the Diamond Audio head unit.
  • Place the other end with the wire ferrule into the REM port on the amplifier and secure using a 2mm allen.
    Step 8

    Mounting the amplifier:

    • The kit will come with a few mounting options:
      • We will provided four velcro squares that can be used to mount the amplifier to the amplifier bracket. 
      • The kit will come with velcro sheets that can be used.
      • You may choose to drill into the mounting plate and secure using screws.

    Step 9

    Running the power and ground wires (33:04):

    • For this step you will need to remove the seats and gas tank to expose the wire chase.
    • Remove your seat. 
    • Remove the T40 bolts that secure the ECU plate on top of the battery, disconnect the two connections on the ECU plate. 
    • Remove the two T40 bolts that secure the front of the gas tank, near the forks.
    • Remove the two T40 bolts that secure the bottom of the gas tank by the battery. 
    • Remove the fuel line by sliding the collar up and than pulling straight down. 
      • We recommend having a towel handy as a small amount of fuel may drip when the collar is removed. 
    • Remove the vent lines and lift the gas tank up and off the motorcycle. 
    • Once the wire chase is exposed, remove the cover by lifting the tabs around the edges. 
    • Remove the 60 AMP fuse from the inline fuse of the provided power wire.
    • Route the power and ground wires in the wire chase.
      • The end with wire ferrel will connect to the amplifier. 
      • The end with ring terminals will connect to the battery.
      • Route the wires through the fairing on the Left side (clutch side) and towards the amplifier. 
    • Place the wire ferrel on the red power wire into the 12V in port on the amplifier and secure the wire ferrel with a 2mm allen wrench.
    • Place the wire ferrel on the black ground wire into the Ground port on the amplifier and secure the wire ferrel with a 2mm allen wrench.
    • Clean up the wires on the wire chase, you can use a few zip ties to hold everything in place. 
    • Connect the power wire to the positive battery terminal.
    • Connect the ground wire to the negative battery terminal.
    • Insert the 60 AMP fuse back into the inline fuse holder. 
    • Secure any extra power and ground wire.

    Step 10

    Check the functionality of your Stage 2 bundle:

    • Turn the ignition on so that the radio powers on. 
    • Find a song that will play for at least a few minutes.
      • Turn up the volume on your head unit to about 75% of the MAX volume.
      • Using a small flathead screwdriver adjust the Front Gain (Front Speakers) until your desired sound level is reached.
      • You can make any other EQ settings changes with in the head unit.

    Step 11

    Reassembling the motorcycle:

    • Manage any loose wires: under the seat, in the wire chase or inside the fairing. 
    • Replace the bolts that secure the ECU tray.
    • Reconnect the 2 connectors on top of the ECU tray.
    • Replace the chase cover.
    • Replace the gas tank.
      • Replace the four T40 bolts that secure the gas tank. 
      • Run the vent lines for the gas tank. 
      • Reconnect the gas line by pulling the collar back and pushing back into place.
    • Replace you seat.

    Step 12

    Replace the outer fairing:

    • Reconnect the headlight connector.
    • Place the outer fairing into place and secure with the center windshield bolt.
    • Replace the windshield.
    • Replace the three T27 torx bolts from the top of the fairing.
    • Replace the four T27 torx bolts.
      • There are two located on each side of the fairing.
      • The shorter bolt is lower and long bolt is towards the top of the fairing.
    • Remove the fender cover over the front fender.

    Congratulations on installing your new
    Diamond Audio Stage 2 Bundle!

    Previous article
    Next article