Scosche LPTA15: Stereo Replacement & Steering Wheel Control Interface
For Select 2003-14 Toyota 20-Pin Stereo Systems
This LPTA15 interface allows you to replace your factory OEM stereo while retaining factory steering wheel controls & factory amp systems.
Product Description
Image shows the LPTA15 interface module and its wiring harness, designed and engineered in the UK, custom manufactured in China.
Application Guide
| TOYOTA | Cont'd |
|---|---|
| 2003-13 4Runner | 2006-12 RAV4 |
| 2005-11 Avalon | 2005-12 Sequoia |
| 2007-11 Camry | 2004-14 Sienna |
| 2004-08 Camry Solara | 2005-11 Tacoma |
| 2003-11 Corolla | 2005-13 Tundra |
| 2007-14 FJ Cruiser | 2009-12 Venza |
| 2008-12 Highlander |
For full applications go to: www.scosche.com
Features
- ✔️ Retains Steering Wheel Controls (If Equipped)
- ✔️ Retains JBL, Harman, Mark Levinson & other OEM Amp Systems (If Equipped)
Wiring Information
Wiring Color Codes
| Vehicle Wire | Function | Vehicle Wire | Function |
|---|---|---|---|
| White | Left Front Positive (LF+) | Gray | Right Front Positive (RF+) |
| White/Black | Left Front Negative (LF-) | Gray/Black | Right Front Negative (RF-) |
| Green | Left Rear Positive (LR+) | Violet | Right Rear Positive (RR+) |
| Green/Black | Left Rear Negative (LR-) | Violet/Black | Right Rear Negative (RR-) |
| Black | Chassis Ground | Orange | Illumination |
| Yellow | +12V Constant Power | ||
| Red | +12V Accessory | ||
| Blue | +12V Power Antenna (Remote Out) |
Navigation Connection
Navigation Connection: N/A
Important Note on Accessory Output
The RED accessory output wire from the LPTA15 interface is rated at 10A Max output for most aftermarket head units. Scosche Industries Inc. does NOT recommend connecting additional +12A switched accessories to this output source as that may cause damage to the LPTA15 module itself. If 10A output is not sufficient, then a relay is needed (Relay not included).
Steering Wheel Control (SWC) Wiring
SWC Wiring Diagram
Diagram shows connections for Violet, Green, and Orange loops, 3.5mm jack, GND, KEY 1, and KEY 2.
Installation Steps
- Prepare SWC steering wheel connector harness by using the chart below.
- Connect the harness to the interface module.
- For Alpine, Clarion, JVC, Panasonic, and Sony car stereos, connect the 3.5mm male steering plug into the steering wheel input jack at the back of the stereo.
- For Kenwood and newer JVC stereos, connect the BROWN wire from the steering wheel harness to the "Remote in" wire at the back of the stereo.
SWC Harness Sample Cuts
Use the SWC radio sample cuts illustrated as possible outcomes to your installation. Note that the wire loops are only meant to be cut if necessary for your installation. Do NOT detach the loops from the connector, cut only.
Diagrams show wire cutting configurations for Alpine (Orange, Green (Cut Loop), Violet), Kenwood (Orange (Cut Loop), Green (Cut Loop), Violet), and Pioneer & Sony (Orange, Green, Violet).
Steering Wheel Controls
Diagram shows buttons on a 20-pin connector steering wheel.
- 1. Volume -
- 2. Volume +
- 3. Track Down
- 4. Track Up
- 5. Source
- 6. Hang-up
- 7. Pick-up
LPTA15 Wiring Diagram
Diagram illustrates the connection of an aftermarket radio to the vehicle using the LPTA15 interface. It shows connections to the aftermarket radio (Key 2, Key 1, 3.5mm, GND) and the interface module, which then connects to the vehicle's harness.
| STEREO BRAND | CONFIGURATION | CONNECTION TO STEREO |
|---|---|---|
| ALPINE | Cut Green Loop | 3.5mm |
| CLARION | Cut Violet Loop | 3.5mm |
| JVC | Cut Green & Violet Loop | 3.5mm or Brown (Key 1) |
| KENWOOD | Cut Orange & Green | Brown (Key 1) |
| PANASONIC | Cut Orange | Brown (Key 1) |
| PIONEER / SONY | Do Not Cut Loops | 3.5mm |
| OTHER BRANDS | Call Tech Support | Brown, Gray, Black |
Liability Disclaimer
This LPTA15 instruction manual is based on carefully documented data and research. Scosche Industries Inc. cannot be held responsible for discrepancies/inconsistencies that may occur due to vehicle manufacturing changes or options, or damages that may occur in the vehicle during the installation of components while using this manual.
Support Information
If you have any further questions or need technical assistance with the installation, or the most current application, please call or visit us on the web at:
- ⚠️ TECH SUPPORT: (800) 363-4490 x1
- www.scosche.com/contact
© Scosche Industries, Inc 2018
