VRFAD-81C - Unspecified CRUX - Free user manual and instructions

Product Type	Video Interface Module
Brand	CRUX
Model	VRFAD-81C
Compatible Vehicles	Audi A3 (8V) 2013-up, A4 (8W) 2016-up, Q5 (B9) 2018-up, Q7 (4M) 2015-up
Video Inputs	Front camera, Rear camera, Extra video input (AV source)
Outputs	LVDS to factory screen, 2x +12V trigger outputs (max 1A each)
Power Supply	12V DC from vehicle, Red wire to +12V (RED/YELLOW), Black to ground (BROWN)
Camera Features	Picture-in-picture with factory PDC graphics, interactive parking guidelines with calibration
OSD Menu	On-screen display for settings: camera activation, park logic, trigger outputs, picture adjustments (brightness, contrast, saturation, hue, sharpness), lane line calibration
Trigger Outputs Configuration	Power Out 1 (Pink): CAM, ACC, or Cam; Power Out 2 (Green): RGear, AVS, or OFF; separately adjustable switching events (CAN, ACC, camera, reverse gear)
Interactive Lane Lines	Height and width adjustable in OSD; vehicle type selectable (A3, A4, Q7)
Installation Location	Behind the glove box, connects to multimedia player
Included Components	VRFAD-81C module, Main harness, Video harness, LVDS1 cable, LVDS2 cable
Camera Power Wiring	Front and rear cameras powered by Pink wire (Output 1), AV source by Green wire (Output 2)
Reverse Gear Trigger	Analog or CAN; if analog, connect white wire to +12V reverse signal
Audio for AV Source	Requires factory Auxiliary Audio Input; activate AUX in vehicle media menu
LED Indicators	Module has LEDs for communication status (manual mentions checking LEDs)

Frequently Asked Questions - VRFAD-81C CRUX

What vehicles are compatible with the CRUX VRFAD-81C?

The VRFAD-81C is compatible with Audi A3 (8V) 2013-up, A4 (8W) 2016-up, Q5 (B9) 2018-up, and Q7 (4M) 2015-up models with MMI Navigation Plus or MIB/MIB II main units.

How do I install the VRFAD-81C module?

Installation is done behind the glove box. Remove the side panel and screws to access the multimedia player. Unplug the factory connectors (Gray Quadlock and LVDS), then connect the VRFAD-81C harness and LVDS cables between the vehicle and the module. Finally, power the module by tapping Red to +12V (RED/YELLOW) and Black to ground (BROWN).

How do I connect aftermarket cameras?

Connect the RCA cables of the front and rear cameras to the corresponding inputs on the VRFAD-81C harness. Power the cameras using the Pink wire (12V Output 1) for both front and rear. In the OSD menu, set Power Out 1 to 'CAM' to enable automatic activation.

Can I use the factory rear-view camera with this module?

Yes, if the vehicle has a factory rear-view camera, you can set the Input RVC to 'OEM' in the OSD. The interface will then display the factory camera when reverse gear is engaged.

How do I enable the interactive parking guidelines?

In the OSD menu, set 'Option 1 RVC Lines' to 'ON'. You can then calibrate the line height and width by activating the rear camera view and pressing the MENU button for 2 seconds to access the settings.

How do I connect an external AV source (e.g., DVD player)?

Connect the AV source's video output to the Video Input RCA on the VRFAD-81C harness. Power it using the Green wire (12V Output 2). Set Power Out 2 to 'AVS' or 'ACC' in the OSD. The vehicle must have a factory AUX Input for audio; activate AUX in the media menu to hear sound.

How do I toggle between camera inputs?

Use the 'MEDIA' button on the steering wheel or radio. A short press toggles through enabled inputs in order: Rear CAM > Front CAM > Video Input. Press and hold 'MEDIA' for 3-5 seconds to exit AV mode.

What are the trigger outputs used for?

The Pink wire (Output 1) and Green wire (Output 2) provide +12V (max 1A) that can be configured in the OSD. Output 1 can be set to CAM (on when camera input is active), ACC (ignition on), or Cam (on when interface is on). Output 2 can be set to RGear (reverse gear), AVS (manual activation), or OFF.

How do I adjust the OSD menu position and size?

In the OSD menu, navigate to 'OSD POS. X' and 'OSD POS. Y' to change horizontal and vertical position. Set 'Size' to Small or Large for the menu window. 'Osd TimeOut' adjusts automatic shutdown time (2-20 seconds).

My rear camera does not activate automatically when shifting to reverse. What should I do?

First, ensure Power Out 2 is set to 'CAM' and Input RVC is 'ON'. If using CAN bus, verify it's set to 'CAN' in 'Option 2 Cam Trigger'. If the vehicle does not support CAN, change to 'Analog' and connect the white wire of the VRFAD-81C harness to a +12V reverse signal wire.

USER MANUAL VRFAD-81C CRUX

• Adds front and back up camera inputs plus an extra video input ^1 .
• Uses the steering wheel control buttons or radio buttons to toggle between the inputs.
• Picture-in-picture mode combining after-market rear-view and front camera picture(s) with factory parking sensor graphics.
• Interactive parking guide lines with calibration function.
• Simultaneous use of picture-in-picture factory parking sensor graphics and interactive lane lines
• Built-in on-screen display and setup.
• 2 trigger outputs (+12V max. 1A), separately adjustable switching events (CAN, ACC, camera, reverse gear)

NOTES:

1. Factory Audio Aux Input is required if video input will be used for AV sources.
2. The VRFAD-81C connects at the multimedia player located in the glove box.

PARTS INCLUDED:

VRFAD-81C Module VRFAD-81C Harness Video Harness

LVDS1 Cable (to vehicle) LVDS 2 Cable (to radio)

INSTALLATION DIAGRAM:

graph TD
    A["LVDS 2 Cable"] --> B["Multimedia player inside the glove box"]
    C["LVDS 1 Cable"] --> D["4-pin HSD Female LVDS Vehicle Harness"]
    E["Female Quadlock Vehicle Harness"] --> F["+12V Power Output 1 (Pink) Connect to camera power"]
    E --> G["+12V Power Output 2 (Green) Connect to AV Source Power"]
    H["Front Camera (not included)"] --> I["Rear Camera (not included)"]
    J["Front Cam"] --> K["Front Cam"]
    L["Vidoo In"] --> M["AV Sources*"]

*NOTE: Vehicle must have Auxiliary Audio Input for the AV source.

DIP SWITCH SETTINGS:

VEHICLE MONITOR SIZE DIP 1 DIP 2 DIP 3			____	____
Audi A3 (8V)	7” ON OFF	OFF
Audi A4 (8W)	8.3” ON ON	ON
Audi Q7 (4M)	8.3” ON OFF	ON

INSTALLATION INSTRUCTIONS:

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1. Installation is done behind the media player in the glove compartment.

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1. Remove the dashboard side panel. 3.

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Remove the screw that holds the glove compartment.

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1. Remove the other screws holding the glove compartment.

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1. Pull down the glove compartment to show the media player.

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1. Remove the media player to gain access to the connectors on the back.

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1. Unplug the Gray connector from the Quadlock connector.

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1. Plug in the Gray connector to the mate on the VRFAD-81C harness.

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1. Locate the Pink OR Gray LVDS connector and unplug it.

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1. Plug the Pink or Gray LVDS cable to the LVDS 1 cable. Plug the other end of the LVDS 1 cable to the module LVDS OUT.

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1. Plug one end of the LVDS 2 cable to the Pink or Gray LVDS port on the media player. Plug the other end of the LVDS 2 cable to the module LVDS IN.

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1. Tap the Red and Black wires of the VRFAD-81C harness to power & ground:
   Red to RED/YELLOW Black to BROWN

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1. Tape the connections well to avoid short circuits.
2. Install the cameras that will be used in the install. Run the camera cables towards the radio. The RCAs and camera power wires will be connected to the VRFAD-81C harness.

Video Inputs

Reverse Camera

Front Camera

Video Input

Power Wire

Pink

Pink

Green

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1. Connect the camera power wires to the PINK power output 1 wire.

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1. Plug in connectors to the VRFAD-81C module.

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1. Test the communication. Turn on the ignition and check if LEDs are on.
2. Test the cameras. Put gear in reverse and check for rear camera image on screen. Put gear in Drive and the front camera should turn on. Test AV source if image shows on the screen.
   Once the cameras and AV source validation is complete, mount the VRFAD-81C module, reinstall the media player and glove compartment.

OSD SETTINGS:

OSD Menu

Use the following buttons to enter the VRFAD-81C OSD Menu:

AUDI

SETTING THE CAMERAS:

Use the PINK wire to power the Front and Rear cameras. Set the OSD as follows:

Option 1 = CAM

Setting the Front Camera

(Use the PINK (Output 1) wire to power the Front camera)

OSD Menu	Menu Item Setting Description
Input FVC		OFF Front camera	deactivated
		ON	Switches to front camera if parking process is enabled and reverse gear is released
Option 1 Park	Logic	Intelligent	For vehicles with front-PDC. Enabled while parking process and up to 12 mph
		RGearOnly	Enabled while parking process (not suitable for front camera operation)
		RGearSpeed	Enabled while parking process and up to e.g. 7 mph (speed adjustable)
		RGearTime Enabled while parking process and up to 20 seconds
Option 2 R/F	Cam ON XX Speed setting for deactivating of the camera image
Option 2 PDC	Graphic	OFF OEM PDC display of the vehicle deactivated
		Horizontal Vehicles with horizontal OEM PDC display
		Vertical Vehicles with vertical OEM PDC display

Note: You can deactivate the camera image by a long press (2 sec.) of the rotation knob.

Setting the Rear Aftermarket Camera

(Use the PINK (12V Output 1) wire to power the Rear camera)

In the OSD Menu, set "Option 1" > menu item "Power Out 2" to "CAM"

If the aftermarket back up camera does not automatically switch on after putting the gear to reverse, you can use the analog setting instead. Connect the white wire from the VRFAD-81C harness to the analog reverse gear signal (+12V) wire. Set "Option 2" > "Cam Trigger" to Analog.

OSD Menu	Menu Item Setting Description
Input RVC		OFF Rear View	camera deactivated
		ON	Switches to rear-view camera if reverse gear is engaged or PDC is activate
Option 1 Park	Logic	Intelligent	For vehicles with PDC. Enabled while parking process and up to 12 mph (not suitable for front camera operation for vehicles without front PDC)
		RGearOnly	Enabled while parking process (not suitable for front camera operation)
		RGearSpeed	Enabled while parking process and up to e.g. 7 mph (speed adjustable)
		RGearTime Enabled while parking process and up to 20 seconds
Option 1 RVC	Lines ON Interactive Lane lines activated
Option 2 R/F	Cam Till XX Speed setting for deactivating of the camera image
Option 2 PDC	Graphic	OFF OEM PDC display of the vehicle deactivated
		Horizontal Vehicles with horizontal OEM PDC display
		Vertical Vehicles with vertical OEM PDC display
Option 2 Cam	Trigger	CAN	Rear gear and blinker signal detection over CAN Bus
		Analog	Rear gear signal detection over analog +12V signals

Note: You can deactivate the camera image by a long press (2 sec.) of the rotation knob.

OSD Menu	Menu Item	Setting	Description
Input	RVC	OEM	If a factory rear-view camera is present. The interface turns off, if reverse gear is enabled and it displays factory rear-view camera
Option 1	Park Logic	Intelligent	For vehicles with front-PDC. Enabled while parking process and up to 12 mph.
		RGearSpeed	Enabled while parking process and up to e.g. 7 mph (speed adjustable)
		RGearTime	Enabled while parking process and up to 20 seconds
Option 2	R/F Cam Till	XX	Speed setting for deactivating of the camera image

AV Input

You can use the Video Input to plug in an external video source. Please note that the vehicle needs to have a factory AUX Input for audio to be heard through the factory sound system.

Use the GREEN wire (12V OUTPUT 2) of the VRFAD-81C harness to power the external video source (max. 1A) of the AV source.

Go to the OSD menu and set "Option 1", menu item "Power Out 2" to "AVS" or "ACC".

OSD Menu	Menu Item Setting Description
Input Right VC/AV	OFF No camera	/ AV source connected
	RC01 AV source	connected to the Video input RCA

In the vehicle's Media menu, activate AUX Input (only necessary for AV source operation) to get sound through the vehicle's audio system. Press the "MEDIA" button for 3 to 5 seconds to go to AV mode.

A short press of the "MEDIA" button (or additionally on touchscreen the swipe gesture) will toggle through the video sources. Each short press will toggle to the next enabled input. If all inputs are enabled the order is:

Rear CAM > Front CAM > Video Input > ... Inputs which are not enabled are skipped.

To exit AV mode, press the "MEDIA" button for 3 to 5 seconds or by a short press of "RADIO/NAV/TEL/PHONE/CAR" button.

Configurable Trigger Outputs

You can configure the both +12V trigger outputs separately in the OSD menu. The PINK wire (12V OUTPUT 1) is Power Out 1 and the GREEN wire (12V OUTPUT 2) is Power Out 2.

OSD Menu	Menu Item Setting Description
Option	Power Out 1 (PINK)	CAM +12V when the interface is on (red LED on)
		ACC +12V when ignition is on
		Cam	+12V when camera input is activated(manually or automatically)
	Power Out 2 (GREEN)	RGear +12V when reverse gear is engaged
		AVS +12V when camera / video input was manually activated
		OFF Trigger output deactivated

Tip: We recommend for all camera to use power out setting "Cam" and for AV source the power out setting of "AVS" or "ACC".

Interactive Lane Lines

The VRFAD-81C includes an Interactive Lane Lines function that is added to the aftermarket rear view camera. Use the OSD menu to activate this feature.

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OSD Menu	Menu Item Setting Description
Option	RVC Lines	OFF	Interactive lane lines deactivated
		ON	Interactive lane lines activated
	Car Type	AUDI A3 / AUDI A4 / AUDI Q7	Vehicle Type Selection

Interactive Lane Lines Settings

The height and width of the interactive lane lines can be set in the OSD menu. For this setting you must first activate the rear view camera level and push the "MENU" button for 2 seconds to activate the settings menu. With the rotation knob you can select the menu point "Line Height" to change the height of the interactive lane lines and with menu point "Line Width" the width of the lines. Click "Exit" to leave the settings menu.

Picture Settings

The camera picture can be set in the OSD menu. For this setting you must first activate the camera level and push the "MENU" button for 2 seconds to activate the settings menu. With the rotation knob you can select and change the "Brightness", "Contrast", "Saturation", Hue" and "Sharpness". Click "Exit" to leave the settings menu.

Note: The picture settings will be retained for every camera input separately.

OSD Settings

You can change the basic configurations of the interface in the OSD (on screen display).

OSD Menu	Menu Item Setting Description
OSD	POS. X 0-xxx Horizontal position of the OSD
	POS. Y 0-xxx Vertical position of the OSD
	Size	Small Small OSD menu window
		Large Large OSD menu windows
	Osd TimeOut 2	-20 Time setting for automatic OSD shutoff
Info Version X	XX.XX Displays	the current SW-version
Option 1	Factory Reset		Reset to factory default settings

VEHICLE APPLICATIONS:

Audi
2013 - Up	A3 (8V)	MMI Navigation Plus with MMI touch 7" or 8.3"
2016 - Up	A4 (8W)	MIB/MIB II main unit
2018 - Up	Q5 (B9)
2015 - Up	Q7 (4M)

NOTE: The RFM-APV connects at the multimedia player located in the glove box.

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2015 A3

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2017 A4

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2017 Q7