Metra Electronics 99-6536 User manual

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INSTALLATION INSTRUCTIONS
99-6536
ATTENTION: With the key out of the ignition,
disconnect the negative battery terminal
before installing this product. Ensure that all
installation connections are secure before
cycling the ignition to test this product.
NOTE: Refer also to the instructions included
with the aftermarket radio.
KIT FEATURES
• ISO DIN radio provision with pocket
• ISO DDIN radio provision
• Retains audio controls on the steering wheel
• Retains the factory backup camera
• Touchscreen display for climate and personalization features
• Painted: Bronze - 99-6536BZ, Silver - 99-6536S
KIT COMPONENTS
• A) Radio trim panel with touchscreen display • B) Radio brackets • C) Pocket • D) #8 x 3/8" Phillips screws (4) • E) Panel clips (10)
• F) Wiring harness (not shown) • G) Antenna adapter (not shown)
TOOLS REQUIRED
• Panel removal tool • Phillips screwdriver
• 9/32" Socket wrench • 5.5mm Socket wrench
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
WIRING & ANTENNA CONNECTIONS
Wiring Harness: Axxess interface built into
touchscreen
Antenna Adapter: Included with kit
A B C D E
Jeep Grand Cherokee 2014-2017
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DASH DISASSEMBLY
1. Using the panel removal tool, gently
unclip, unplug, and remove the climate
control panel. (Figure A)
2. Remove (4) 9/32" screws securing
the radio/display screen, and then
unplug and remove. (Figure B)
3. Remove (3) 5.5mm screws securing
the black control module in the
sub-dash, and then relocate lower to
allow clearance for the aftermarket
radio. (Figure C)
Continue to Kit Preparation
(Figure B)
(Figure A)
(Figure C)

REV. 12/13/21 INST99-6536 3
KIT PREPARATION
(Figure A) (Figure B)
From the factory radio/climate control panel:
1. Unclip the A/C vents from the back of the
panel. (Figure A)
To the 99-6536 radio trim panel:
1. Attach the A/C vents to the back of the
panel. (Figure B)
2. Attach the (10) panel clips provided in
this kit to the clips on the back of the
panel.
Continue to Kit Assembly

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KIT ASSEMBLY
(Figure A)
(Figure B)
(Figure A)
ISO DIN radio provision with pocket
1. Attach the pocket to the radio brackets
using the (4) #8 x 3/8" Phillips screws
provided in this kit. (Figure A)
2. Remove the metal DIN sleeve and trim
ring from the aftermarket radio.
3. Slide the radio into the bracket/pocket
assembly, and then secure it using the
screws supplied with the radio.
(Figure B)
Continue to Axxess Interface Installation
ISO DDIN radio provision
1. Attach the radio brackets to the radio
using the screws supplied with the
radio. (Figure A)
2. Reconnect the negative battery terminal
and prepare for the Axxess interface
installation.
Continue to Axxess Interface Installation

REV. 12/13/21 INST99-6536 5
AXXESS INTERFACE INSTALLATION
INTERFACE FEATURES
• Provides accessory power (12-volt 10-amp)
• Retains R.A.P. (retained accessory power)
• Provides NAV outputs (parking brake, reverse, speed sense)
• Retains audio controls on the steering wheel
• Retains safety chimes
• Retains the factory backup camera
• Retains the factory AUX-IN jack
• Retains balance and fade*
• USB Micro-B updatable
* Non-amplified models only.
INTERFACE COMPONENTS
• Axxess interface (built into the touchscreen display)
• 6536 harness
• 16-pin harness with stripped leads
• 4-pin harness with yellow RCA jacks
• Hazard harness
• Female 3.5mm connector with stripped leads
TABLE OF CONTENTS
Connections
For Models without an Amplifier ............................................................................................6
For Models with an Amplifier. .................................................................................................7
3.5mm Jack Steering Wheel Control Retention .....................................................................8
Installation ....................................................................................................................................9
Programming ................................................................................................................................9
Final Assembly ..............................................................................................................................9
Touchscreen Display Operation .............................................................................................10-11
Steering Wheel Control Settings ...........................................................................................12-13
Troubleshooting .......................................................................................................................... 14
TOOLS REQUIRED
• Wire cutter
• Crimp tool and connectors (example: butt-connectors, bell caps, etc.)
or
• Solder gun, solder, and heat shrink
• Tape
• Zip-ties
• Small flat-blade screwdriver

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6
CONNECTIONS
From the 6536 harness to the aftermarket radio, connect as indicated:
• Black wire to the ground wire.
• Yellow wire to the battery wire.
• Gray wire to the right front (+) speaker output.
• Gray/Black wire to the right front (-) speaker output.
• White wire to the left front (+) speaker output.
• White/Black wire to the left front (-)speaker output.
• The 4-pin connector from the 6536 harness to the 4-pin harness with Yellow RCA jacks.
• Yellow RCA jacks to the reverse camera input. (if retaining the factory backup camera)
• Red and White RCA jacks to the audio AUX-IN jacks of the aftermarket radio.
(if using the AUX-IN jack in the dash)
Note: Disregard the DIN jack, it will not be used in this application.
Continue to 3.5mm jack steering wheel control retention
Attention! This interface will work with models that are either non-amplified, or amplified.
Please follow the instructions carefully for your model vehicle. Failure to do so will result in
either no sound, or low sound. If you are unsure if your vehicle is factory amplified or not,
please contact your local dealership.
For Models Without a Factory Amplifier:
From the 16-pin harness with stripped leads to the aftermarket radio, connect as indicated:
• Red wire to the accessory wire.
• Orange/White wire to the illumination wire. (if applicable)
• Green wire to the left rear (+) speaker output.
• Green/Black wire to the left rear (-)speaker output.
• Purple wire to the right rear (+) speaker output.
• Purple/Black wire to the right rear (-)output.
Tape off and disregard the following (6)wires, they will not be used in this application:
Blue/White, Brown, Gray, Gray/Black, White, White/Black
The following (3) wires are only for multimedia/navigation radios that require these wires.
• Blue/Pink wire to the VSS/speed sense wire.
• Green/Purple wire to the reverse wire.
• Light Green wire to the parking brake wire.

REV. 12/13/21 INST99-6536 7
CONNECTIONS (CONT.)
The following (3) wires are only for multimedia/navigation radios that require these wires.
• Blue/Pink wire to the VSS/speed sense wire.
• Green/Purple wire to the reverse wire.
• Light Green wire to the parking brake wire.
From the 6536 harness to the aftermarket radio:
• Black wire to the ground wire.
• Yellow wire to the battery wire.
Tape off and disregard the following (4) wires, they will not be used in this application:
Gray, Gray/Black, White, White/Black
• The 4-pin connector from the 6536 harness to the 4-pin harness with Yellow RCA jacks.
• Yellow RCA jacks to the reverse camera input. (if retaining the factory backup camera)
• Red and White RCA jacks to the audio AUX-IN jacks of the aftermarket radio.
(if using the AUX-IN jack in the dash)
Note: Disregard the DIN jack, it will not be used in this application.
Continue to 3.5mm jack steering wheel control retention
Attention! This interface will work with models that are either non-amplified, or amplified.
Please follow the instructions carefully for your model vehicle. Failure to do so will result in
either no sound, or low sound. If you are unsure if your vehicle is factory amplified or not,
please contact your local dealership.
For Models With a Factory Amplifier:
From the 16-pin harness with stripped leads to the aftermarket radio, connect as indicated:
• Red wire to the accessory wire.
• Blue/White wire to the amp turn on wire.
Note: This wire must be connected to hear sound from the factory amplifier.
• Orange/White wire to the illumination wire. (if applicable)
• Gray wire to the right front (+) speaker output.
• Gray/Black wire to the right front (-)speaker output.
• White wire to the left front (+) speaker output.
• White/Black wire to the left front (-)speaker output.
• Green wire to the left rear (+) speaker output.
• Green/Black wire to the left rear (-)speaker output.
• Purple wire to the right rear (+) speaker output.
• Purple/Black wire to the right rear (-)output.
Tape off and disregard the following (1) wire, it will not be used in this application: Brown

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4-pin harness with yellow RCA jacks:
• If retaining the factory backup camera to the touchscreen display is desired,
connect the Yellow RCA jack labeled “Rearview camera”, to the Yellow RCA jack
from the 6536 harness .
Note: If this method is chosen, the backup camera option must be enabled in
the Settings screen .
• Disregard the Yellow RCA jack labeled “AUX video”, it will not be used in this
application.
CONNECTIONS (CONT.)
3.5mm jack steering wheel control retention:
The 3.5mm jack is to be used to retain audio controls on the steering wheel.
• For the radios listed below: Connect the female 3.5mm connector with stripped leads to the
male 3.5mm SWC jack from the 6536 harness. Any remaining wires tape off and disregard.
• Eclipse: Connect the steering wheel control wire, normally Brown, to the Brown/White
wire from the connector. Then connect the remaining steering wheel control wire,
normally Brown/White, to the Brown wire from the connector .
• Metra OE: Connect the Gray steering wheel control wire (Key 1) to the Brown wire.
• Kenwood or select JVC with a steering wheel control wire: Connect the Blue/Yellow
wire to the Brown wire.
Note: If your Kenwood radio auto detects as a JVC, manually set the radio type to
Kenwood. See the instructions under changing radio type.
• XITE: Connect the steering wheel control SWC-2 wire from the radio to the Brown wire.
• Parrot Asteroid Smart or Tablet: Connect the 3.5mm jack into the AX-SWC-PARROT (sold
separately), and then connect the 4-pin connector from the AX-SWC-PARROT into the
radio. Note: The radio must be updated to rev. 2.1.4 or higher software.
• Universal “2 or 3 wire” radio: Connect the steering wheel control wire, referred to as
Key-A or SWC-1, to the Brown wire from the connector. Then connect the remaining
steering wheel control wire, referred to as Key-B or SWC-2, to the Brown/White wire
from the connector. If the radio comes with a third wire for ground, disregard this wire .
Note: After the interface has been programmed to the vehicle, refer to the manual
provided with the radio for assigning the SWC buttons. Contact the radio manufacturer
for more information.
• For all other radios: Connect the 3.5mm jack from the 6536 harness to the jack on the
aftermarket radio designated for an external steering wheel control interface. Please refer
to the aftermarket radio’s manual, if in doubt as to where the 3.5mm jack connects.

REV. 12/13/21 INST99-6536 9
ATTENTION: It is highly advisable to read the following steps beforehand, to ensure a clear
understanding of what is to be expected. The following steps must be done in the order that
they are numbered.
With the vehicle completely off:
1. Locate the factory antenna connector in the dash and complete all necessary connections
to the radio. Use the antenna adapter provided to adapt the factory antenna connector to
the aftermarket radio.
2. Connect the 16-pin harness with stripped leads into port “B” in the touchscreen display.
3. Connect the 4-pin harness with yellow RCA jacks into port “C” of the touchscreen display.
4. Connect the hazard harness into port “D” of the touchscreen display, and then to the
designated wiring harness in the vehicle.
Note: Ensure to plug in the 8-pin connector from the climate control, using the wrong
connector will jam the CANBUS.
5. Disregard port “E”, it will not be used in this application.
6. Port “F” is an update port for future firmware upgrades.
AB
C
E
FD
1. Connect the 6536 harness to the wiring harnesses in the vehicle. Then insert the 6536 harness
into port “A” in the touchscreen display.
Note: This is a timed process.
2. Press the push-to-start button to start the vehicle.
3. Program the Axxess interface built into the touchscreen display:
a. Once the touchscreen display loads up, select the vehicle type.
b. Wait until the radio comes on, and the touchscreen display shows SWC Configured.
This process may take up to (3) minutes.
Note: If the touchscreen display does not load up, or the radio doesn’t come on within (3)
minutes, and/or the touchscreen display does not show SWC Configured, turn the vehicle off
and disconnect the 6536 harnesse s from port “A” in the touchscreen display. Check all the
connections, reconnect the harness into the touchscreen display, and then try again.
4. Cycle the key off, then back on. If the driver’s door is closed, open and close the door.
5. Refer to the Settings page within the Touchscreen Display Operation section. Ensure that all
factory features have been selected properly according to the options available for the vehicle .
6. Test all functions of the installation for proper operation, before reassembling the dash.
Note: The clock and compass in the driver’s information center will no longer be functional.
1. Mount the completed radio/climate control assembly in the dash using the screws supplied
with the factory radio.
2. Snap the radio trim panel with touchscreen display over the completed assembly, and then
reassemble the dash in reverse order of disassembly.
FINAL ASSEMBLY
I N S TAL L ATI O N PROGRAMMING
Note: DO NOT CONNECT!

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• This is the climate control screen which will be displayed on the touchscreen display.
This is considered the Main Menu screen.
• The upper left tab with (3) arrows will take you to the Heated/Cooled Seats* screen,
Heated Steering* screen, Mirror Dimming* screen, and also to the screen where the
hard buttons that were on the factory radio panel are now placed.
• The upper right tab with a gear icon will take you to the Settings screen.
• The climate controls will function in the same manner that they did with the factory
climate controls.
• For models with rear climate controls, the button labeled REAR will take you to the
rear climate control menu.
* If applicable.
• This is the Heated/Cooled Seats, Heated Steering, and Mirror Dimming screen which will be
displayed on the touchscreen display.
• The upper left-middle tab with a home icon will take you back to the Main Menu screen.
• The upper right-middle tab with a gear icon will take you to the Settings screen.
• The upper right tab with a car icon will take you to the screen where the hard buttons that
were on the factory radio panel are now placed.
Continued on the next page
Climate Control screen Heated/Cooled Seats screen
TOUCHSCREEN DISPLAY OPERATION