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Pacific Accessory Corporation
Page 7
Rev: V2
Date:032718
Advanced Amplifier Interface
for Toyota / Lexus
AP4-TY11
•
Config C, Version 2:
The voice / navigation audio leads
are present in the 40-pin connector located behind the
Multi-Display. Connect the loose 2-pin harness labeled
"C" to the 2-pin connector labeled "To Amp PRO". Next,
locate the 40-pin Multi-Display connector (at the back
of the separate radio / HVAC display screen). Connect
the White / Blue wire from the "C" harness into the
wire that is in pin 26 and connect the White / Red wire
from the "C" harness to the wire that is in pin 25 of the
40-pin Multi-Display connector. Refer to the Vehicle
Connections Chart starting on page 5 for specific
wire color information. The Brown "Mute Input from
Navigation" wire from the AP4-TY11 harness will not be
used for this configuration.
To A
mp PR
O
C
Config C
Version 2
Wire to Multi-Display 40 Pin Connector
White / Blue to Pin 26 and White / Red to Pin 25
Factory Connector Viewed from Pin Side
25 26
1
4
3
2
5 6
7 8 9
10
11
12
13
14 15 16
17 18 19
20
21 22 23 24
27 28 29 30
31
32
33
34 35 36
37 38 39
40
Voice / Nav Audio Connections (cont.)
•
Config C, Version 3:
The voice / navigation audio leads are only present at the outputs of the navigation module. There
are 3 different methods for connections under version 3. Use the information provided to determine the best option for your
application.
Method 1
is used when you are only adding an aftermarket amplifier for subwoofers, or when wiring an aftermarket
amplifier to the front speaker outputs of the factory amplifier, rather than running new speaker wires from the aftermarket
amp straight to the front speakers. When running an aftermarket amp to the front speaker
outputs of the factory amplifier,
the left front speaker output of the
aftermarket amplifier passes through the navigation module. It is recommended to use
an amplifier that provides 150 watts or less so that the factory navigation module is not damaged due to excessive heat. If
the front speaker output is in excess of 150 watts, use Method 2 or Method 3 instead.
Method 1 may require running a wire from the AP4-TY11 harness brown wire labeled "Mute Input From Navigation" to
a wire at the navigation module. Most applications do not require this connection. Next, cut the front speaker outputs
(and rear speaker outputs if applicable) to the appropriate speaker wire outputs at the factory amplifier, and insulate the
side that goes towards the amplifier (these will not be used). Wire the aftermarket amplifier outputs to the appropriate
remaining speaker wires. Refer to the Vehicle Connections Chart section starting on page 5 for information regarding
where the navigation module is located and where to connect the Brown wire.
•
Config C, Version 3:
Method 2
is used to pass the voice prompts and
navigation audio through the AP4-TY11 instead
of through the navigation module when using an
aftermarket amplifier on the front speakers. If the
Vehicle Connections Chart (starting on page 5)
does not indicate that there is a VR / Nav Trigger
wire, Method 2 is not an option (use Method 3).
If the aftermarket amplifier output is less than
150 watts on the front speakers, Method 1 is
also an option.
Method 2 requires running a wire from the AP4-
TY11 harness brown wire labeled "Mute Input
From Navigation" to a wire at the navigation
module. It is also necessary to run a speaker
wire from the White / Red (+) and White / Blue
(-) wires on the loose AP4-TY11 harness labeled
"C" to the navigation audio outputs located at
the navigation module.
To Amp P
RO
C
Wire to navigation module output
(per vehicle chart)
Mut
e Input Fr
om
Na
vi
ga
tion
Config C
Version 3 Method 2
Factory
Nav
Module
Factory Amplifier
Left Rear
Speaker Outputs
Right Rear
Speaker Outputs
Left Front
Speaker Outputs
Right Front
Speaker Outputs
Cut and Insulate Speaker Wires
Left Front Speaker Inputs Into Nav Module
Left Front Speaker Outputs from Nav Module
VR / Nav Trigger Ground Output
To
VR / Na
v
Trigger
