VS41 Intelligent 4-Camera Switcher
For Controlling Front, Rear, and Blind Spot Cameras
Introduction & Features
The VS41 is an intelligent 4-camera switcher designed to integrate up to four cameras (front, rear, and blind spot) with an aftermarket radio. It supports manual trigger wires (pulsed or constant) and digital control via PAC interfaces like BCI, RP4.2, or RPA through an expansion port. It also accepts analog + or - and constant/pulsed signals.
General Important Notes
- PAC Interface Integration: When used with PAC interfaces (BCI, RP4.2, RPA) featuring an Expansion Port, connect the 10-pin connector. Manual trigger wiring is not required; the interface digitally controls the VS41.
- Default Video Output: The VS41 defaults to Input 1 when no triggers are active, making it ideal for a rear (reverse) camera.
- Input Priority: Inputs are prioritized in descending numerical order. A lower-numbered input (e.g., Input 2) will override a higher-numbered input (e.g., Input 3 or 4) if both are triggered simultaneously.
- Trigger Signal Types: Input triggers can accept either pulsed or constant signals, suitable for connections like turn signals.
- Reverse Trigger Output: Provides a 150 mA 12v (+) trigger output when any input triggers are activated.
- 3-Second Delay: The last video input source and the reverse trigger output remain active for 3 seconds after the last trigger deactivates (this feature is not applicable when used with BCI, RP4.2, or RPA interfaces).
- Video Quality: Ensure all RCA connections are secure and of high quality to prevent poor video quality.
- Input Voltage Range: Positive input triggers accept voltages between 2v and 12v.
General Wiring Connection Chart
The VS41 unit features connections for video output, four video inputs, and various trigger/power inputs. The following table outlines the general VS41 wire functions:
| VS41 Wire Color | Function |
|---|---|
| Video Output | Connect to aftermarket radio video input |
| Video 1 Input - Reverse Camera | Connect to reverse camera |
| Video 2 Input - Front Camera | Connect to front camera |
| Video 3 Input - Left Blind Spot | Connect to left blind spot camera |
| Video 4 Input - Right Blind Spot | Connect to right blind spot camera |
| White | Input 1 trigger (+) |
| White / Black | Input 1 trigger (-) |
| Gray | Input 2 trigger (+) |
| Gray / Black | Input 2 trigger (-) |
| Green | Input 3 trigger (+) |
| Green / Black | Input 3 trigger (-) |
| Purple | Input 4 trigger (+) |
| Purple / Black | Input 4 trigger (-) |
| Purple / White | Reverse trigger output (+) |
| Yellow | Accessory 12v (+) |
| Black | Ground (-) |
| 10-Pin Plug | Expansion Port on BCI-, RP4.2-, or RPA Module |
Note: Any wire present on the VS41 not mentioned in specific application charts may not be used for that particular installation.
The VS41 unit is a compact device with multiple RCA-style video connectors and a 10-pin expansion port.
Vehicle Specific Applications & Wiring
The VS41 is designed for integration with various vehicle models using specific PAC or compatible interfaces. Below are details for common applications:
GM Trucks / SUVs (2003-2006)
Instructions for use with the GM1A interface.
Important Notes:
- Requires connection to analog turn signal wires and the GM1A's reverse output trigger.
- Input 2 (front camera) can be manually activated via a toggle switch or automatically via the RadioPRO PC application.
Specific Wiring Connections (VS41 Wire to Vehicle/Interface):
| VS41 Wire | Connection |
|---|---|
| White | Reverse Trigger Input (+) - Connect to the Purple / White reverse trigger output provided by the GM1A. |
| Gray / Black | Front Camera Trigger (-) - Connect to a ground (-) trigger via a toggle switch for manual activation. |
| Green | Left Blind Spot Trigger Input (+) - Connect to the dark green wire at the turn signal switch (top of steering column). |
| Purple | Right Blind Spot Trigger Input (+) - Connect to the light green wire at the turn signal switch (top of steering column). |
| Purple / White | Reverse Trigger Output (+) - Connect to the aftermarket radio's reverse trigger input. |
*Always verify all signals with a multi-meter before connecting.
Chevrolet / GMC Vehicles (2014-2017)
Instructions for use with the RP5-GM51 interface.
Specific Wiring Connections (VS41 Wire to Vehicle/Interface):
| VS41 Wire | Connection |
|---|---|
| White | Reverse Trigger Input (+) - Connect to the Purple / White reverse trigger output from RP5-GM51. If not using RP5-GM51, connect to the *Blue / Brown wire at the BCM (Brown 26-pin plug, Pin 26). |
| Gray / Black | Front Camera Trigger (-) - Connect to a 12v (-) trigger via a toggle switch for manual activation. |
| Green | Left Blind Spot Trigger Input (+) - Connect to the *Blue / White wire at the BCM (Brown 26-pin plug, Pin 2). |
| Purple | Right Blind Spot Trigger Input (+) - Connect to the *Green / Violet wire at the BCM (Black 26-pin plug, Pin 3). |
| Purple / White | Reverse Trigger Output (+) - Connect to the aftermarket radio's reverse trigger input. |
| Yellow | Accessory 12v (+) - Connect to the Red accessory output from RP5-GM51. If not using RP5-GM51, find a 12v (+) accessory wire that turns on/off with the key. |
| Black | Ground (-) |
*Always verify all signals with a multi-meter before connecting.
Chevrolet / GMC Vehicles (2015-2017)
Instructions for use with the RP5-GM51 interface.
Specific Wiring Connections (VS41 Wire to Vehicle/Interface):
| VS41 Wire | Connection |
|---|---|
| White | Reverse Trigger Input (+) - Connect to the Purple / White reverse trigger output from RP5-GM51. If not using RP5-GM51, connect to the *Green / White wire at the BCM (Gray 26-pin plug, Pin 3). |
| Gray / Black | Front Camera Trigger (-) - Connect to a 12v (-) trigger via a toggle switch for manual activation. |
| Green | Left Blind Spot Trigger Input (+) - Connect to the *Blue / White wire at the BCM (Brown 26-pin plug, Pin 2). |
| Purple | Right Blind Spot Trigger Input (+) - Connect to the *Green / Violet wire at the BCM (Black 26-pin plug, Pin 3). |
| Purple / White | Reverse Trigger Output (+) - Connect to the aftermarket radio's reverse trigger input. |
| Yellow | Accessory 12v (+) - Connect to the Red accessory output from RP5-GM51. If not using RP5-GM51, find a 12v (+) accessory wire that turns on/off with the key. |
| Black | Ground (-) |
*Always verify all signals with a multi-meter before connecting.
Nissan Titan (2016-2017)
Designed for use with the Best Kits harness BHA7552.
Specific Wiring Connections (VS41 Wire to Vehicle/Harness):
| VS41 Wire | Connection |
|---|---|
| White | Reverse Trigger Input (+) - Connect to the *Green / White wire in the passenger kick panel (White 100-pin plug, Pin 15). |
| Gray / Black | Front Camera Trigger (-) - Connect to a 12v (-) trigger via a toggle switch for manual activation. |
| Green | Left Blind Spot Trigger Input (+) - Connect to the *Green / Black wire at the BCM (Black 24-pin plug, Pin 13). |
| Purple | Right Blind Spot Trigger Input (+) - Connect to the *Green / Yellow wire at the BCM (Black 24-pin plug, Pin 1). |
| Purple / White | Reverse Trigger Output (+) - Connect to the aftermarket radio's reverse trigger input. |
| Yellow | Accessory 12v (+) - Connect to the Red accessory output provided by the BHA7552. If not using BHA7552, find a 12v (+) accessory wire that turns on/off with the key. |
| Black | Ground (-) |
*Always verify all signals with a multi-meter before connecting.
Toyota Tundra (2014-2017)
Instructions for use with the RP4.2-TY11 interface.
Specific Wiring Connections (VS41 Wire to Vehicle/Interface):
| VS41 Wire | Connection |
|---|---|
| White | Reverse Trigger Input (+) - Connect to the Purple / White reverse trigger output provided by the RP4.2-TY11. If not using RP4.2-TY11, connect to the *Blue wire in the passenger kick panel (White 20-pin plug, Pin 20). |
| Gray / Black | Front Camera Trigger (-) - Connect to a 12v (-) trigger via a toggle switch for manual activation. |
| Green | Left Blind Spot Trigger Input (+) - Connect to the *Green wire at the flasher relay (White 18-pin plug, Pin 10). |
| Purple | Right Blind Spot Trigger Input (+) - Connect to the *Beige wire at the flasher relay (White 18-pin plug, Pin 17). |
| Purple / White | Reverse Trigger Output (+) - Connect to the aftermarket radio's reverse trigger input. |
| Yellow | Accessory 12v (+) - Connect to the Red accessory output provided by the RP4.2-TY11. If not using RP4.2-TY11, find a 12v (+) accessory wire that turns on/off with the key. |
| Black | Ground (-) |
*Always verify all signals with a multi-meter before connecting.
RadioPRO App Configuration
The PAC RadioPRO PC application allows for configuration of the VS41's front camera behavior when used with compatible interfaces like the GM1A. The interface does not need to be powered or connected to the vehicle to access these settings.
Front Camera Behavior Modes:
| Mode | Description | Notes |
|---|---|---|
| Greater than 0MPH and less than *xMPH | Activates the camera input when the vehicle speed is between 0 mph and the designated speed. | *Options: 3 mph, 5 mph, or 7 mph. |
| On when Shift into D until 6MPH or 30Sec | Activates the camera input when the vehicle is placed into Drive. The input turns off when speed exceeds 6 MPH or after 30 seconds. | This mode is recommended for vehicles with an automatic transmission. |
| On when Shift out of R until 6MPH or 30Sec | Activates the camera input when the vehicle is shifted out of Reverse. The input turns off when speed exceeds 6 MPH or after 30 seconds. | This mode is recommended for vehicles with a manual transmission. |
Technical Bulletin: False Triggering of Blind Spot Cameras
Issue:
The VS41 may falsely trigger the blind spot cameras (Inputs 3 and/or 4) when the brakes are engaged or parking lights are turned on.
Solution:
To resolve this issue, wire a resistor with a value between 40kΩ and 60kΩ in series with the analog trigger wire corresponding to the camera experiencing the false trigger. This typically applies to Inputs 3 and 4.
Important Notes:
- This issue primarily affects hardware version V7 or lower. Version V8 hardware has this resistance added internally and should not require this fix.
- Resistors only need to be added to the specific wires that are being triggered.
Diagram Description: A diagram illustrates the VS41 unit with connections for Inputs 3 and 4. A resistor symbol is shown in series with the Green/Black wire (Input 3 trigger (-)) and Purple/Black wire (Input 4 trigger (-)), indicating the placement for the 40kΩ - 60kΩ resistor.
