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INSTALLATION OPTIONS
Adding a sub to a factory system:
This feature offers the ability to add a subwoofer to a factory system. (refer to page 3)
Adding a full-range amp & sub to a factory system:
This feature offers the ability to add a full-range amp and sub to a factory system. (refer to page 4)
Note: The interface provides a 12-volt 1-amp output to turn on aftermarket amp(s). If installing
multiple amps, an SPDT automotive relay will be required if the amp turn-on current of all amps
combined exceeds 1-amp. Use Metra part number E-123 (sold separately) for best results.
2
INSTALLATION
1. Remove the factory radio †, then unplug all connectors.
2. Install the AX-DSPX-HK3 vehicle T-harness to the vehicle and make all necessary
connections, but leave the amp turn-on wire disconnected.
3. Plug the AX-DSPX-HK3 vehicle T-harness to the AX-DSPX-HK3 interface.
4. Plug the AX-DSPX-HK3 interface harness to the AX-DSPX-HK3 interface.
5. Download and install the AXDSP-X app from the Google Play Store or Apple App
Store.
6. Open the app then select the Bluetooth Connection tab. Follow the instructions to
pair the mobile device to the interface. Refer to page 6 for more information.
7. Scroll to the Configuration tab then select the vehicle type. Press the Lock Down ‡
button to save the configuration. Refer to page 7 for more information.
8. Connect the amp turn-on wire.
9. Adjust the settings in the app as desired. Press the Lock Down ‡ button to save any
new configurations.
† Refer to Metra online for dash disassembly. If Metra makes a dash kit for the vehicle,
disassembly will be within those instructions.
‡ Anytime the interface is locked down the key must be cycled off then back on
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