PAC APH-GM02 is a speaker connection harness designed for select Cadillac, Chevrolet, and GMC vehicles with factory-amplified sound systems. It enables seamless integration of aftermarket amplifiers without cutting or modifying the vehicle's original wiring, simplifying the installation process. Each pair of wires is labeled with the corresponding speaker name for easy identification.
PAC APH-GM02 is a speaker connection harness designed for select Cadillac, Chevrolet, and GMC vehicles with factory-amplified sound systems. It enables seamless integration of aftermarket amplifiers without cutting or modifying the vehicle's original wiring, simplifying the installation process. Each pair of wires is labeled with the corresponding speaker name for easy identification.
Speaker connection harness for select
2014-2019 Cadillac Chevrolet and GMC
vehicles with factory amplied sound systems
Pacific Accessory Corporation
Page 1
Copyright © 2018. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
APH-GM02
Rev: V1
Date: 100418
Introduction and Features
The APH-GM02 simplies speaker wire connections when adding aftermarket ampliers. Aftermarket ampliers can
be easily added with no need to cut or modify a vehicle’s original wiring. Each pair of wires has been labeled with the
corresponding speaker name.
Wiring Overview
Harness 1 (APH-GM02-HAR V1 8P):
Installation Notes
1. It is always best to use a tone generator (PAC Part# TL-PTG2) to verify that the tables in this manual, and the labels on the
wires, match the wiring in your specic vehicle. This is important as there are instances where different trim levels of the
factory Bose system may have the speaker outputs in different locations. For example, in the 2018 SUV’s if the vehicle is
equipped with the UQH option, it will use the “LF Speaker 2” labeled wires as the Left Front Tweeter wires where the UQA/
UQS option will use the wires labeled “LF Tweeter”. These options (RPO Codes) can be found by looking at the RPO Code
sticker (if equipped) or scanning the QR code in the driver door jamb.
2. Connection of the male Green 16-pin connector is only necessary if you are leaving factory speakers connected to the factory
amplier.
3. The Black 8-pin female connector from the APH-GM02-HAR V1 8P must be connected to the factory amplier when using a
PAC AmpPRO Interface.
4. Not all applicable vehicles will come equipped with a corresponding speaker for all of the wires populated in our harness. It is
important to understand which speakers the vehicle is equipped with.
5. If you are leaving any of the factory speakers connected to the factory amplier, simply connect the speaker wires (color for
color) between the male and female connectors. For example: If you want the rear speakers to be powered by the factory
amplier, simply connect the Green, Green / Black, Purple and Purple / Black wires from the male connector to the Green,
Green / Black, Purple and Purple / Black wires from the female connector.
1. Locate the vehicle’s factory amplier and disconnect the Black 8-pin, Green 16-pin and Black 16-pin connectors.
2. Connect the APH-GM02 harness to the connectors that were disconnected in the previous step.
3. Connect the male connectors from the APH-GM02 to the amplier.
4. Connect the longer loose wires from the APH-GM02 to your aftermarket amplier outputs or passive crossovers according to
the tables in this manual. Insulate the shorter loose wires when they are not in use.
Installation Steps
Connect to aftermarket amplier
output or passive crossover.
APH-GM02-HAR V1 8P
APH-GM02-HAR V1 16PA
APH-GM02-HAR V1 16PB
Subwoofer
RF Speaker
LF Speaker
RF Tweeter
LR Speaker
LF Tweeter
RR Speaker
Center Speaker
Rear Trim Speaker
LF Speaker 2
RF Speaker 2
1 Black Pass through (Ground)
5 Yellow
Pass through (Constant 12v)
2
White/Black Front Left Midrange -
6
White Front Left Midrange +
3
Gray/Black Front Right Midrange -
7
Gray Front Right Midrange +
4
Blue/Black Subwoofer -
8
Blue Subwoofer +
Subwoofer
Pin Number Wires Description
Label
Wire Color
RFSpeaker
LFSpeaker
*Illustration is for reference only.
Your harness will have more wires*
Speaker connection harness for select
2014-2019 Cadillac Chevrolet and GMC
vehicles with factory amplied sound systems
Pacific Accessory Corporation
Page 2
Copyright © 2018. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
APH-GM02
Rev: V1
Date: 100418
Wiring Overview (cont.)
Harness 2 (APH-GM02-HAR V1 16PA):
Connect to Aftermarket amplier
output or passive crossover.
APH-GM02-HAR V1 8P
APH-GM02-HAR V1 16PA
APH-GM02-HAR V1 16PB
Subwoofer
RF Speaker
LF Speaker
RF Tweeter
LR Speaker
LF Tweeter
RR Speaker
Center Speaker
Rear Trim Speaker
LF Speaker 2
RF Speaker 2
1 Brown Pass through
9
Brown Pass through
2 Green / Black Rear Left Midrange -
10
Green Rear Left Midrange +
3 Purple / Black Rear Right Midrange -
11
Purple Rear Right Midrange +
4 White / Blue Front Left Tweeter -
12
White/Red Front Left Tweeter +
5 Gray / Blue Front Right Tweeter -
13
Gray/Red Front Right Tweeter +
6 Orange / White Rear Trim Speaker -
14
Orange Rear Trim Speaker +
7 Brown Center Channel +
15
Brown/White Center Channel -
8 White / Black Front Left Speaker 2 -
16
White Front Left Speaker 2 +
RRSpeaker
LRSpeaker
RearTrimSpeaker
Pin Number Wires Description
Label
Wire Color
LFTweeter
RFTweeter
LFSpeaker2
CenterSpeaker
*Illustration is for reference only.
Your harness will have more wires*
Speaker connection harness for select
2014-2019 Cadillac Chevrolet and GMC
vehicles with factory amplied sound systems
Pacific Accessory Corporation
Page 3
Copyright © 2018. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
APH-GM02
Rev: V1
Date: 100418
Wiring Overview (cont.)
APH-GM02-HAR V1 8P
APH-GM02-HAR V1 16PA
APH-GM02-HAR V1 16PB
Subwoofer
RF Speaker
LF Speaker
RF Tweeter
LR Speaker
LF Tweeter
RR Speaker
Center Speaker
Rear Trim Speaker
LF Speaker 2
RF Speaker 2
Harness 3 (APH-GM02-HAR V1 16PB):
1 Gray / Black Front Right Speaker 2 -
9 Gray Front Right Speaker 2 +
2 Brown Pass through
3 Brown Pass through
4 Brown Pass through
5 Brown Pass through
6 Brown Pass through
7 Brown Pass through
8 Brown Pass through
10 Brown Pass through
11 Brown Pass through
12 Brown Pass through
13 Brown Pass through
14 Brown Pass through
15 Pink Pass through
16 Green Pass through
RF Speaker 2
Label
Pin Number Wires DescriptionWire Color
*Illustration is for reference only.
Your harness will have more wires*
Connect to Aftermarket amplier
output or passive crossover.
-
1
-
2
-
3
PAC APH-GM02 is a speaker connection harness designed for select Cadillac, Chevrolet, and GMC vehicles with factory-amplified sound systems. It enables seamless integration of aftermarket amplifiers without cutting or modifying the vehicle's original wiring, simplifying the installation process. Each pair of wires is labeled with the corresponding speaker name for easy identification.
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