PAC AP4-FD32 Handleiding
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© 2025 Stinger Solutions. All rights reserved. PAC is a Power Brand of Stinger Solutions.
PAC-audio.com
C
Page 1
Rev: 2
Date:050225
Advanced Amplier Interface
for Select Ford Vehicles
AP4-FD32
The AP4-FD32 provides a 6-channel pre-amp output for use with aftermarket audio equipment. Using the digital
A2B audio data in conjunction with CAN data, the AP4-FD32 delivers a variable 5v RMS pre-amp output with fading,
balance, equalization, and level control capabilities. The module also retains audio from other vehicle features such
as factory navigation prompts, safety chimes, Bluetooth and voice activation. A data bus controlled remote amplier
turn on wire is also provided by the AP4-FD32. The module also provides a variable 2-channel ber optic digital audio
output (TOSLINK).
Introduction and Features
Important Notes
1. This interface is only compatible in vehicles equipped with an A2B data bus controlled premium sound system. To verify
compatibility, look for a B&O badge on the door speakers or dash speakers.
2. The AP4 interface installs at the factory amplier location. Included T-Harness installs behind radio to access factory
speaker wiring not available at factory amplier.
3. The factory amplier will be disconnected and will no longer power the vehicle speakers. An aftermarket amplier must be
added to power the vehicle's speakers. For example, you cannot only add a subwoofer, as the factory speakers that were
connected to the factory amplier will no longer function.
4. On most Ford models, some of the vehicle speakers will be connected to the radio module in addition to the external
amplier. These speakers will also stop working when the factory amplier is disconnected and will need to be powered by
an aftermarket amplier.
5. The chime volume and minimum volume levels are set to 50% by default. If this level is adequate, no additional adjustment
is required. Please refer to the Setup and Conguration section on page 4 for more details.
6. The level control knob must be connected in order to manually adjust the minimum volume settings.
7. The remote output is rated at 2A of current. If more current is needed, an external relay must be used.
8. Channels 5 and 6 are non-fading outputs. The output level of channels 5 and 6 can be controlled using the supplied level
control knob.
9. No adjustments can be made manually using the programming button, or the factory SWC, when the module is connected
to a PC.
Module Layout
LED 1
Interface Connector 1
Expansion Port
TOSLINK Output
Programming Button
Feature Select
DIP switches
Front Output
Ch. 1(L) and 2(R)
Non-Fading Level Control
Knob Connection
USB Connection
Rear Output
Ch. 3(L) and 4(R)
SUB (Non-Fading)
Ch. 5 and 6
LED 2
DIP
1 2 3 4
ON
Two Channel Mode 5v / 4v Preout Not Used Not Used
1 2 3 4
Set DIP switches to the ON position to activate the corresponding features.
Set DIP switches to the OFF position for any features that are not desired.

© 2025 Stinger Solutions. All rights reserved. PAC is a Power Brand of Stinger Solutions.
PAC-audio.com
C
Page 2
Rev: 2
Date:050225
Advanced Amplier Interface
for Select Ford Vehicles
AP4-FD32
Installation
1. Access the factory amplier (Audio Digital Sound Processing Module).
2. Disconnect the 20-pin, 8-pin and A2B 4-pin connectors from the amplier. The amplier can be removed or left in
the vehicle.
3. Plug the 20-pin, 8-pin and A2B Adapter cables into the matching connectors on the AmpPRO (AP4-FD32-HAR)
harness.
4. Before connecting the interface, set any feature DIP switches that apply to the install:
a. DIP switch 1 is used for two channel mode. In this mode, all outputs will be non-fading and all chimes are
diverted through channels 1 & 2 and TOSLINK.
b. Set DIP switch 2 on (down) to lower the RCA output voltage to 4v. Leave DIP switch 2 o (up) to keep the RCA
output voltage at 5v. See troubleshooting section on Page 6 for more details.
c. DIP switch 3 & 4 are not used and should remain o (up).
4. Connect the AmpPRO harness to the AmpPRO interface.
5. Connect the level control knob cable to the AmpPRO interface.
6. Connect the signal cables (RCA/TOSLINK) and remote input from the aftermarket amplier.
NOTE! The aftermarket amplier must have a very solid ground and the amplier power/ground
connections should be made before connecting the RCA's or Remote Turn On to the AP4-FD32!
On aluminum framed vehicles, it is recommended to ground directly to the battery.
7. Reference the Speaker Connections section on the next page to connect speaker wires.
Wiring Connection Chart
Front
1/L
2/R
4/R
5 6
3/L
Remote Amp Turn On +
2A Max Output
Rear
Sub
TOSLINK
20-pin
Amplifier
8-pin
Amplifier
To Adapter
To Vehicle Amplifier Harness
Speaker
Leads
1-10
Non-Fading
Level Control
Knob
Vehicle
Adapter
Interface
Connector
To Aftermarket
Amplifier
AP4-FD32-HAR

© 2025 Stinger Solutions. All rights reserved. PAC is a Power Brand of Stinger Solutions.
PAC-audio.com
C
Page 3
Rev: 2
Date:050225
Advanced Amplier Interface
for Select Ford Vehicles
AP4-FD32
Speaker Connections
If using the factory speaker wires to connect to the aftermarket amplier, they will be located in two locations, at the 20-pin and
8-pin plugs at the Digital Sound Processing Module (Amplier) and a 32-pin plug at the Audio Control Module (Radio). Adapter
plugs are provided for all speaker wire connections.
Because the factory speaker wire pin locations, colors and plug style vary from model to model, use a tone generator to nd
speaker locations and polarity and ll in the chart below. Please note that most vehicles will not follow the "standard" speaker
wire colors and polarity. For example the right front positive speaker lead may connect to the left rear negative
(GRN/BLK) lead on the adapter plug.
APH-FD03
32-PIN RADIO
SPEAKER HARNESS
TO RADIO
SPEAKER
LEADS
TO VEHICLE
HARNESS
AP4-FD32-HAR
20-PIN AMPLIFIER
SPEAKER HARNESS
SPEAKER
LEADS
TO VEHICLE
AMPLIFIER
HARNESS
32 Pin Plug at RADIO (ACM) (APH-FD03)
LEADS PAC COLOR POSITION/POLARITY
Speaker 1 WHT
Speaker 1 WHT/BLK
Speaker 2 GRY
Speaker 2 GRY/BLK
Speaker 3 GRN
Speaker 3 GRN/BLK
Speaker 4 VIO
Speaker 4 VIO/BLK
Speaker 5 ORG
Speaker 5 ORG/BLK
NOTES:
20 & 8 Pin Plugs at AMPLIFIER (DSP) (AP4-FD32-HAR)
LEADS PAC COLOR POSITION/POLARITY
Speaker 1 WHT
Speaker 1 WHT/BLK
Speaker 2 GRY
Speaker 2 GRY/BLK
Speaker 3 GRN
Speaker 3 GRN/BLK
Speaker 4 VIO
Speaker 4 VIO/BLK
Speaker 5 RED
Speaker 5 RED/BLK
Speaker 6 BLU
Speaker 6 BLU/BLK
Speaker 7 BRN
Speaker 7 BRN/BLK
Speaker 8 WHT/BLU
Speaker 8 WHT/RED
Speaker 9 LT GRN
Speaker 9 LT GRN/BLK
Speaker 10 ORG
Speaker 10 ORG/BLK
Product specificaties
Merk: | PAC |
Categorie: | Receiver |
Model: | AP4-FD32 |
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