Radio Replacement and
Steering Wheel Control Interface
for Select Toyota Vehicles
RP4.2-TY13
© 2022 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
Pacific Accessory Corporation
Page 2
Rev: V3
Date:032222
Interface & Harness Connections
Plug Interface Connectors 1, 2 and 4 into the appropriate ports on the RP4.2-TY13 interface (using the diagram on page 1 or the
label on the bottom of the RP4.2-TY13 module). The Connector 3 connection will be dependent upon whether or not the vehicle
has a factory amplified system. Plug Connector 3 into the appropriate port on the RP4.2-TY13; Amplified if the vehicle has a factory
amplifier, Non-Amplified for base audio.
Connect the RPA-VA1 Video Adapter to the 6-pin plug on the RP4.2-TY13 harness.
Interface Connector 1
Interface Connector 2
Interface Connector 4
RPA-VA1
Interface Connector 3
Installation Steps
Purple
Rear R + input
Purple / Black
Rear R - input
Green
Rear L + input
Green / Black
Rear L - input
Gray
Front R + input
Gray / Black
Front R - input
White
Front L + input
White / Black
Front L - input
Blue / Yellow
SWC Output / Key 1
Brown
SWC Output / Key 2
3.5 mm Jack
SWC Output
Pink
Vehicle Speed
Sense Output
Light Green
Parking Brake
Output
Violet / White
Reverse Signal
Output
Orange / White
Illumination Output
Blue / White
Amp Turn On Input
Blue
Not Used
1. Set the Radio Select DIP switches according to the radio you are installing.
2. Wire the aftermarket radio to the RP4.2-TY13 Interface 4 harness according to the
wiring connections chart on this page.
3. Connect the appropriate SWC Output to the aftermarket radio (if applicable).
4. Connect the OEM Camera RCA to the aftermarket radio (if applicable).
5. Once all connections have been made, connect the white, gray and black Vehicle
Connectors to the matching connectors in the vehicle.
6. Turn the ignition on. The LED on the interface will turn on and the +12v accessory
wire will turn on. For factory amplified systems, see “Testing and Verification” section
on page 5 for details on how to set the gain.
7. If the radio does not turn on and the LED on the interface is solid orange, check
the DIP switches on the side of the interface to make sure they are not all in the on
position.
8. If you wish to reassign functions to the SWC, or utilize short press, long press dual
command functionality, follow the programming instructions starting on the following
page.
Aftermarket Radio Wiring Table
Wires from Interface Connector 4
Other =
Advent, BOYO, Dual, Lightning Audio, Rockford Fosgate, Visteon
Alpine
JVC
Kenwood /
Lightning Audio
Clarion /
Stinger
2-Wire
Resistive
Pioneer /
Other*
Sony
Fusion
1
2
1 & 2
3
2 & 3
1, 2, & 3
4
1 & 4
Set DIP switches that correspond with your radio to the ON position.
Set all other DIP switches to the OFF position.
*Other - Dual / Axxera (these brands could also have 2-wire resistive), Jensen, Rockford Fosgate
