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INSTALLATION INSTRUCTIONS FOR PART 99-7503 APPLICATIONS 2003-2005 Mazda 6 99-7503 KIT FEATURES • DIN Head Unit Provision • ISO DIN Head Unit Provision KIT COMPONENTS A) Radio/Climate Control Housing Assembly l B) ISO Brackets l C) ISO Trim plate l D) Harnesses...
99-7503 2003-2004 MAZDA 6 Electronic Climate Control Disconnect the negative battery terminal to prevent an accidental short circuit. Unscrew the shift knob counter clockwise to remove. (Figure A) Unclip and remove the cup holder/parking brake cover and shifter cover as one unit. (Figure B)
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99-7503 2003-2004 MAZDA 6 Electronic Climate Control Unsnap and remove radio/climate control panel including climate con- trol vents at the top. (Figure E) Remove (4) Phillips screws securing vents to radio/climate control panel to remove. (Figure F) Remove (8) Phillips screws securing...
99-7503 2003-2004 MAZDA 6 Manual Climate Control Disconnect the negative battery terminal to prevent an accidental short circuit. Unscrew the shift knob counter clockwise to remove. (Figure A) Unclip and remove the cup holder/parking brake cover and shifter cover as one unit. (Figure B)
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Note: Notice how they are posi- tioned in the backlight dispersion bar as they will be placed in the 99-7503 the same way. (Figure H) DASH DISASSEMBL Y INSIDE...
99-7503 2003-2004 MAZDA 6 Manual Climate Control Remove (4) Phillips screws securing backlight dispersion bar and knob trim bezels. (Figure I) Push the bottom edges of the knob trim bezels from the front side to the back and slide both pieces out as one unit.
99-7503 2003-2004 MAZDA 6 Electronic Climate Control Clip the climate control knob outer trim ring panel into the 99-7503 housing. (Figure A) Align the screw holes in the climate control and the radio housing panel then push the climate control onto the radio housing panel.
(Figure D ) Unclip and remove the small oval cover plate at the bottom center of the factory radio and insert into the 99-7503 radio housing. (Figure E) KIT ASSEMBL Y ASSEMBLED INSTALLED Note: The 16 position to...
99-7503 DIN HEAD UNIT PROVISION Slide the DIN cage into the Radio Housing and secure by bending the metal locking tabs down. (Figure A) Slide the aftermarket head unit into the DIN cage until secure. (Figure B) Snap the Trim plate into the Radio Housing.(Figure B)
Note: Due to differences in factory tolerances you may need to apply the provided felt tape to the edge of the 99-7503 radio housing to relieve backlight bleed through. 1. Looking at edge of radio housing apply felt tape to inner edge (toward back of kit). If it is posi- tioned to closely to the outer edge you may be able to see it once it is in the dash.
99-7503 DISPLA Y CUSTOMIZATION 1. Press and hold the Clock button in the factory display until “Set Text” is displayed, then release the button. Settings will begin with the first character location. Use the Set button to select the desired character then press the AMB button to select the next character location. There are 10 available character locations.
*NOTE: When Black a wire is not present, ground radio to vehicle chassis. All colors may not be present on all leads due to manufacturer’s specifications. Plug the 5 way connector (supplied with the 99-7503) into location 1 on the back of the 99-7503 housing (see diagram).