Axxess AXDSPH-GM33 Installation guide

Brand: Axxess

Model: AXDSPH-GM33

Type: Installation guide

AXDSPH-GM33

INSTALLATION INSTRUCTIONS

ATTENTION: With the key out of the ignition,

disconnect the negative battery terminal

before installing this product. Ensure that all

installation connections, especially the air

bag indicator lights, are plugged in before

reconnecting the battery or cycling the

ignition to test this product.

NOTE: Refer also to the instructions included

with the aftermarket accessory before

installing this device.

TABLE OF CONTENTS

Installation Options ...............................................2

Installation .............................................................2

20-Pin Harness Pinout...........................................3

Adding A Subwoofer To A Factory System .........4

Adding A Full-Range Amp and

Subwoofer To A Factory System ..........................5

AX-DSP T-Harness

2021-UP

The Axxess T-harness is a basic and simple plug-n-play harness for

easy installation of the AXDSP-X or AXDSP-L (sold separately) for

vehicle specific applications. Most T-harnesses created by Axxess

will have an 8-pin harness, with the speaker wires pinned. If you are

installing a 4-channel amplifier with one of the AXDSP interfaces,

leave these connectors disconnected. The only reason for connecting

these harnesses together would be if the AXDSP interface is being

used for adding a subwoofer amplifier only. Some T-harnesses

require additional wiring and/or installation steps, see page 2.

Refer to page 3 for a pinout legend for the 20-pin harness, and also

additional wiring and notes.

APPLICATIONS

Visit AxxessInterfaces.com for more detailed

information about the product and

up-to-date vehicle specific applications.

Visit Metraonline.com or AxxessInterfaces.com

for harness and interface options.

Visit

AxxessInterfaces.com

for current application list.

www.MetraOnline.com

MetraOnline.com may be used

to assist with dash assembly

instructions. Simply enter your

Year, Make, Model vehicle into the

vehicle fit guide and look for the

Dash Kit Installation Instructions.

Adding a subwoofer to a factory system:

The diagram on Page 4 shows the connections that need to be made to add a subwoofer to the

factory system.

Note: RCA jacks sold separately.

Adding a full-range of amps and subwoofer to a factory system:

The diagram on Page 5 shows the connections that need to be made to add: Subwoofer (RCA jacks

sold separately)

Amplifier (SPDT relay E-123 required) or

Additional Amp (RCA jacks sold separately).

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.

1. Disassemble the dash, unplug all connectors, and then remove the factory radio.†

2. Install the AXDSPH-GM33 vehicle T-harness to the vehicle and make all necessary

connections, but leave the amp turn-on wire disconnected.

3. Plug the AXDSPH-GM33 vehicle T-harness to the AXDSPH-GM33 interface.

4. Plug the AXDSPH-GM33 interface harness to the AXDSPH-GM33 interface.

5. Download the AXDSP-XL app from the Google Play Store or Apple App store.

6. Refer to the AXDSP-X or AXDSP-L for tuning instructions.

† For dash disassembly instructions, refer to metraonline.com. Enter the year, make,

and model of the vehicle in the Vehicle Fit Guide and find instructions under Metra

Radio Install kits.

INSTALLATION OPTIONS I N S TAL L AT IO N

REV. 1/31/24 INSTAXDSPH-GM33

20-PIN HARNESS PINOUT

Pin-1 Red Accessory Power

Pin-2 Brown Not Applicable

Pin-3 Pink CAN-HI (CAN +)

Pin-4 Black/Yellow Future Use

Pin-5 White/Black Front Left Speaker (-)

Pin-6 Gray/Black

Front Right Speaker (-)

Pin-7 Green/Black Rear Left Speaker (-)

Pin-8 Purple/Black

Rear Right Speaker (-)

Pin-9 RCA Input 5 (-)

Pin-10 RCA Input 6 (-)

Pin-11 Yellow Battery Power

Pin-12 Orange Control Wire for the AX-BASSKNOB

Pin-13 Blue/Pink CAN-LO (CAN -)

Pin-14 Black Ground

Pin-15 White Front Left Speaker (+)

Pin-16 Grey Front Right Speaker (+)

Pin-17 Green Rear Left Speaker (+)

Pin-18 Purple Rear Right Speaker (+)

Pin-19 RCA Input 5 (+)

Pin-20 RCA Input 6 (+)

Wire View of Harness

Factory Radio

Keep Connected

Any remaining wires

tape off and disregard

Black - Ground

Orange - Control

Factory Radio Harness

Any remaining wires

tape off and disregard

Vehicle T-Harness

Blue/White - Amp Turn-On Wire

Channels 6 through 10

are only available

when using the AXDSP-X

RCA Jacks

(sold separately)

Bass Knob included

with DSP interface

DSP Interface

(sold seperately)

Output Harness included with DSP interface

Bass Knob

ADDING A SUBWOOFER TO A FACTORY SYSTEM

REV. 1/31/24 INSTAXDSPH-GM33

ADDING A FULL-RANGE AMP & SUBWOOFER TO A FACTORY SYSTEM

SUB

Factory Radio

Factory Radio Harness

Interface

Cut the male

connector off and

connect speaker

wires to amp

White / Front Left +

White/Black / Front Left -

Gray / Front Right +

Gray/Black Front Right -

Green / Rear Left +

Green/Black / Rear Left -

Purple / Rear Right +

Purple/Black / Rear Right -

Any remaining wires

tape off and disregard

Vehicle T-Harness

Bass Knob

Blue/White - Amp Turn-On Wire

Unplug connector

Tape off and disregard

any remaining wires

Black - Ground

Orange - Control

An SPDT relay, Metra part number

E-123, is required if the amp turn-on

current of all amps exceeds 1-amp.

RCA Jacks

(sold separately)

Assignable Outputs Labeled CH 6-10

Interface Harness

AX-DSPX-GM31 vehicle T-harness

LD-DSP-RPAD2

Plug in the LD-DSP-RPAD2

NOTE: The LD-DSP-RPAD2 must be installed

in order to get audio and have chimes and

turn signal click function.

NOTE: Plug the LD-DSP-RPAD2 (RETENTION OF THE FOLLOWING

FEATURES ARE KEPT WITH THE LD-DSP-RPAD2 CONNECTED.

EX: TURN SIGNAL CLICKS AND DOOR CHIMES)

AXDSPX-GM33 vehicle T-harness

REV. 1/31/24 INSTAXDSPH-GM33

Metra recommends MECP

certified technicians

INSTALLATION INSTRUCTIONS

AXDSPH-GM33

Having difficulties? We’re here to help.

Contact our Tech Support line at:

386-257-1187

Or via email at:

[email protected]

Tech Support Hours (Eastern Standard Time)

Monday - Friday: 9:00 AM - 7:00 PM

Saturday: 10:00 AM - 5:00 PM

Sunday: 10:00 AM - 4:00 PM

Axxess AXDSPH-GM33 Installation guide

Axxess AXDSPH-GM33 Installation guide

Axxess AXDSPH-GM33 Installation guide

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