ASC Audio Factory Backup Camera Retention Harness with 6 Volt Converter for Toyota and Scion Installation Manual

1. Introduction

This manual provides detailed instructions for the installation and operation of the ASC Audio Factory Backup Camera Retention Harness with an integrated 6 Volt Converter. This product is designed to allow the retention and functionality of your vehicle's original factory reverse camera when upgrading to an aftermarket car stereo or navigation radio. Please read these instructions carefully before beginning the installation process.

2. Product Overview

The ASC Audio Factory Backup Camera Retention Harness facilitates the integration of your vehicle's existing OEM backup camera with a new aftermarket head unit. It includes a 12-volt to 6-volt converter, which is essential for powering most factory cameras that operate at 6 volts, while the aftermarket radio typically provides 12 volts. This harness ensures proper voltage supply and signal transmission for your reverse camera display.

ASC Audio Factory Backup Camera Retention Harness with 6 Volt Converter

Image 1: The ASC Audio Factory Backup Camera Retention Harness with the integrated 6 Volt converter.

3. Safety Information

Always disconnect the vehicle's negative battery terminal before performing any electrical work to prevent short circuits and electrical damage.
Ensure all connections are secure and properly insulated to avoid electrical shorts.
If you are unsure about any step of the installation, consult a professional car audio installer.
Do not force connectors; ensure they are correctly aligned before pushing them together.

4. Package Contents

1x Factory Camera Retention Harness
1x Integrated 12V to 6V Converter

5. Vehicle Compatibility

This harness is compatible with specific Toyota and Scion vehicles. Your aftermarket radio must have a dedicated backup camera input feature (typically an RCA input) to utilize this harness.

Compatible Scion Models:

2016 FR-S
2016 iM
2016 tC

Compatible Toyota Models:

2014-2019 4-Runner
2017 86
2015-2016 Camry
2014-2019 Corolla
2017-2018 Corolla iM
2014-2019 Highlander
2016-2019 Prius
2015-2019 Prius C
2017-2018 Prius Prime (Plus)
2015-2017 Prius V
2015-2018 RAV4
2014-2019 Sequoia
2015-2017 Sienna
2014-2019 Tacoma
2014-2019 Tundra
2015-2016 Venza
2018-2019 Yaris

Important Note: This is not a plug-and-play solution for all connections and requires some manual wire connections. Verify the connector type in your vehicle matches the harness before installation. If the connector appears similar to the one pictured, it should be compatible.

6. Installation Instructions

The installation process involves connecting the retention harness to your vehicle's factory wiring and your new aftermarket radio. This typically requires identifying specific wires for power, ground, video signal, and the reverse trigger.

Required Tools:

Wire strippers/crimpers
Electrical tape or heat shrink tubing
Multimeter or test light
Panel removal tools
Screwdrivers/sockets

Installation Steps:

Disconnect Battery: Before starting, disconnect the negative terminal of your vehicle's battery to prevent electrical shorts.
Remove Factory Radio: Carefully remove the trim panels and screws securing your factory radio. Refer to your vehicle's service manual for specific instructions on dash disassembly.
Identify Factory Camera Connector: Locate the factory wiring harness that connects to the original radio and carries the backup camera signal. The retention harness will connect to this.
Connect Retention Harness: Plug the appropriate end of the ASC Audio retention harness into the vehicle's factory camera connector.
Wire 6 Volt Converter: The integrated 12V to 6V converter needs to be wired correctly.
- Connect the ground wire from the retention harness to the ground on the 6V adapter. Then, connect both to your aftermarket stereo's ground wire.
- Connect the grey wire from the harness to the Accessory (ACC) red wire on your aftermarket stereo. This ensures the converter receives power only when the ignition is on.
- Connect the white wire from the harness to the red 6V input wire on the converter.
Connect Video Signal: Plug the yellow male RCA connector from the retention harness into the dedicated camera input (usually labeled "CAM IN" or "REVERSE CAMERA") on your aftermarket stereo.
Connect Reverse Trigger Wire: This wire tells the aftermarket radio when the vehicle is in reverse, activating the camera display.
- Locate the reverse trigger wire in your vehicle. This is often found in the main wiring harness behind the radio or near the shifter. You can use a multimeter to identify this wire: put the vehicle in reverse (with the engine off, ignition on, and parking brake engaged) and probe wires until you find one that shows approximately 12 volts. When shifted out of reverse, the voltage should drop to 0.
- For some Toyota models (e.g., 2016 RAV4), the reverse sensing wire to enable the camera is often the green wire on the 28-pin connector. For a 2015 Tacoma, a common trigger point is a red and yellow wire under the glovebox.
- Connect the reverse wire from your aftermarket stereo (often purple/white or similar) to the vehicle's reverse trigger wire.
Test Connections: Before reassembling the dash, reconnect the battery and test the camera functionality. Shift the vehicle into reverse to ensure the camera image appears on your aftermarket stereo display.
Secure Wiring and Reassemble: Once confirmed working, secure all wiring with zip ties or electrical tape to prevent rattles and shorts. Reinstall the aftermarket radio and trim panels.

Video Resources:

While no official seller videos are available for direct embedding based on the provided criteria, searching online for "Toyota/Scion factory backup camera aftermarket radio wiring" may provide helpful user-generated content. Always verify information from unofficial sources.

7. Operating Instructions

Once the ASC Audio Factory Backup Camera Retention Harness is correctly installed, operating your factory backup camera with your aftermarket radio is straightforward:

Turn on your vehicle and aftermarket stereo.
Shift the vehicle's transmission into Reverse (R).
The aftermarket stereo display should automatically switch to the backup camera view.
Shift out of Reverse, and the display should return to the previous audio/navigation screen.

8. Troubleshooting

Problem	Possible Cause	Solution
No camera image when in reverse	Incorrect wiring of 6V converter Reverse trigger wire not connected or incorrect Aftermarket radio not set to auto-switch to camera Loose video RCA connection	Verify 6V converter power and ground connections. Double-check the reverse trigger wire connection and ensure it receives 12V in reverse. Consult your aftermarket radio manual for camera input settings. Ensure the yellow RCA cable is securely plugged into the camera input on the radio.
Distorted or flickering image	Poor video signal connection Grounding issue	Check RCA connections for tightness and damage. Ensure all ground wires are securely connected to a good chassis ground.
Camera always on or never turns off	Reverse trigger wire incorrectly connected or shorted.	Verify the reverse trigger wire connection. It should only receive 12V when the vehicle is in reverse.

9. Specifications

Product Type: Factory Camera Retention Harness with 6 Volt Converter
Input Voltage: 12V DC (from vehicle/aftermarket radio)
Output Voltage: 6V DC (for factory camera)
Connector Type: OEM-specific connectors for Toyota/Scion
Video Output: RCA (Yellow)
Material: Acrylonitrile Butadiene Styrene
Package Dimensions: 7.91 x 5.04 x 0.83 inches
Item Weight: 2.46 ounces (0.07 Kilograms)

10. Warranty and Support

For warranty information or technical support, please refer to the retailer or manufacturer's official website where the product was purchased. Keep your proof of purchase for any warranty claims.