Installation Guide

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MetraOnline.com © COPYRIGHT 2021 METRA ELECTRONICS CORPORATION REV. 4/20/21 INST99-7821B
INSTALLATION INSTRUCTIONS
99-7821B
Attention! Let the vehicle sit with the key
out of the ignition for a few minutes before
removing the factory radio. When testing the
aftermarket equipment, ensure that all factory
equipment is connected before cycling the
key to ignition.
KIT FEATURES
KIT COMPONENTS
• A) Radio trim panel • B) Radio brackets • C) Pocket • D) (4) #8 x 3/8” Phillips screws • E) (8) Plastic panel clips
• F) Axxess wiring harness and interface (not shown) • G) Antenna adapter (not shown)
TOOLS REQUIRED
• Panel removal tool • Phillips screwdriver
TABLE OF CONTENTS
Dash Disassembly ..................................................2
Kit Preparation .......................................................3
Kit Assembly
–ISO DIN radio provision with pocket ..................4
–ISO DDIN radio provision .....................................4
Axxess Interface Installation ............................5-14
Final Assembly ......................................................15
WIRING & ANTENNA CONNECTIONS
Wiring Harness: Included in kit
Antenna Adapter: Included in kit
A B C D E
Honda Civic (Excluding LX models) 2016-2021
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specific applications. Note: Additional parts required to retain factory amplifier.
ISO DIN radio provision with pocket
ISO DDIN radio provision
Painted matte black
Touchscreen display for climate and
personalization features
Retains the factory backup camera
and LaneWatch camera
Retains audio controls on the steering wheel
Provides NAV outputs (parking brake,
reverse, speed sense)
Additional purchase of AXSP-HN is required
to retain factory amplifier. Identifiable
when equipped with factory sub-woofer
or center channel speakers.

Summary of content (16 pages)