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AP4-CH41 (R.2)
Wiring Connection Chart
To Radio
Installation
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.
Two Channel Mode
1 2 3 4
DIP
ON
1. Remove factory radio.
2. Disconnect the main 52-pin factory harness from radio.
3. Connect AmpPRO harness to vehicle harness.
4. Connect AmpPRO harness to factory radio.
5. If you are using the AmpPRO in a vehicle with a factory amplifier, leave the "Factory Speaker Connection Point" connectors
plugged into each other. If the vehicle has no factory amplifier, connect the aftermarket amplifier's speaker outputs to the
provided "Factory Speaker Connection Harness" and connect to the "Factory Speaker Connection Point."
6. Set any feature DIP switches that apply to your install.
a. Set DIP switch 1 on (down) to activate two channel mode. In this mode, both the TOSLINK and front RCA outputs (1
and 2) become non-fading outputs. All rear chimes will also be routed through these outputs in two channel mode
b. Set DIP switch 2 on (down) to lower the RCA output voltage to 4v. Leave DIP switch 2 off (up) to keep the RCA output
voltage at 5v. See troubleshooting section on page 6 for more details.
c. DIP switch 3 is not used.
d. DIP switch 4 is for vehicles without a factory amplifier. Set DIP switch 4 on (down) to reconfigure the radio for proper
communication with the AmpPRO.
7. If you are using the APA-TOS1 (sold separately) refer to the instructions included with that product for its installation
8. Connect the AmpPRO harness to the module.
9. Connect the level control knob to the module and install in an accessible location.
10. Connect the signal cables and remote input from the aftermarket amplifier.
11. Complete the "Radio Reset Procedure." (see page 5 for more information)
a. Make sure the radio is fully booted and LED 1 is on. Press and hold the "Programming Button" until the LEDs alternate
flashing amber, then release.
b. The LEDs will alternate flashing green and the radio will re-boot
12. Turn the vehicle off, close the doors and let the vehicle sit for 10 minutes.
Pacific Accessory Corporation
Factory Speaker
Connection Point
To Vehicle
Harness
Factory Speaker
Connection Harness
5v / 4v Preout
1
© 2022 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
Advanced Amplifier Interface for
Remote Turn On Output
2A Max Output
Non-Fading
Level Control
Knob
No Function
2
3
PAC-audio.com
Chrysler / Dodge / Jeep / RAM
1(L) 2(R)
3(L)
4(R) 5(L) 6(R)
Front
Rear
Non-Fading
To Aftermarket
Non-Amplified Vehicles
4
Rev. V13
Date: 062322
Page 2
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