CRUX SWRSU-38D Wiring Interface User Manual
- June 13, 2024
- CRUX
Table of Contents
CRUX SWRSU-38D Wiring Interface
PRODUCT FEATURES
- Retains select factory features in select Subaru vehicles while functioning with an aftermarket radio.
- Pre-programmed to retain factory Steering Wheel Controls.
- Retains Starlink functionality.
- Retains factory Auxiliary Input.
- Retains factory backup camera (see note on diagram below).
- Includes antenna adapter.
- Retains Harman Kardon amplifier
PARTS INCLUDED
-
SWRSU-38D Module
-
SU-38D Harness
-
Antenna Adapter
-
SWC Cable
INSTALLATION DIAGRAM
STARLINK RETENTION
To retain Starlink, separate the Starlink module from the radio and reconnect
the harness and antenna connectors to the module. Stuff the Starlink module
back into the dash and secure it with zip ties or tape to prevent it from
rattling.
NOTE: The front speaker audio will be lost if the Starlink module is
removed from the system.
DIP SWITCH SETTINGS
AFTERMARKET RADIO DIP SWITCH SETTINGS:
| RADIO BRAND: | DIP: | 1 | 2 | 3 | 4 |
|---|---|---|---|---|---|
| Atoto, Dual, Farenheit, Jensen, Pioneer | OFF | OFF | ON | ON | |
| Power Acoustik, Soundstream | OFF | OFF | ON | ON | |
| Blau pun kt, Most off-brand Radios | OFF | OFF | ON | ON | |
| Alpine | OFF | OFF | OFF | OFF | |
| Clarion | OFF | ON | ON | OFF | |
| Kenwood | OFF | ON | ON | ON | |
| JVC | OFF | ON | OFF | ON | |
| Boss, Old Sony | OFF | ON | OFF | OFF | |
| New Sony | OFF | OFF | ON | OFF |
NOTE: For Atoto, Blaupunkt, Dual, Farenheit, Power Acoustik, Soundstream, and most off-brand radios, check the aftermarket radio’s manual to see if the SWC buttons need to be programmed.
SUBARU STEERING WHEEL CONTROL DIP SWITCH SETTING:
| Subaru | DIP: | 5 | 6 | 7 | 8 |
|---|
1
2| ON
OFF| OFF
ON| OFF
OFF| ON
ON
3.5MM SWC CABLE
Plug in the 3.SMM to 4-Pin SWC cable to the SWC module and the 3.5mm plug to
the aftermarket radio SWC port.
NOTE: Insulate the Blue/Yellow wire or 3.5mm plug if not being used.
For aftermarket radios that have wires for SWC connections, cut off the 3.5mm plug on the Crux SWC Cable and connect the SWC wires as follows:
Note that there are some radios that only have SWCl and SWC2, in this case “shield” does not need to be connected.
VEHICLE APPLICATIONS
| SUBARU | NOTE: = Phone pick up and hang up buttons will be reversed. |
|---|
2019 – 2022
2018 – 2022
2017 – 2022
2018 – 2022
2018 – 2022
2018 – 2021| Ascent w/ Harman Kardon Amplifier
Crosstrek w/ Harman Kardon Amplifier
Impreza w/ Harman Kardon Amplifier
Legacy w/ Harman Kardon Amplifier
Outback w/ Harman Kardon Amplifier
WRX / STi w/ Harman Kardon Amplifier
DIP switch settings for Pioneer receivers
Location of the switch may vary on the Interface (Comer or Middle).
Please note that interfaces with DIP at the end of the LOT# are installed with
the switch.
- Set DIP switch to “3V3” position for support of NEW generation Pioneer steering wheel button control.
- Set DIP switch to “5V” position for support of OLD generation Pioneer steering wheel button control.
Customer Support
Crux Interfacing Solutions • 21541 Nordhoff St Unit C, Chatsworth, CA 91311
phone: 818-609-9299 • fax:
818-996-8188 •
www.cruxinterfacing.com
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