Crux VRFMB-78N User Manual

MERCEDES BENZ

2015 - 2016 A-class (W176)
2015 - 2016 B-class (W24)
2015 - 2017 C-class (W205)
2015 - 2016 E-class (W212)

2015 - 2016 CLA (C117)
2015 - 2016 CLS (W218)
2015 - 2016 GLA (X156)
2015 - 2016 GLC (X205)

 Rear-view camera input with Dynamic Guide Lines
 Control by factory infotainment
 On-screen display and setup
 2 trigger outputs (+12V max. 1A), separately adjustable switching events (CAN, ACC, rear-view camera,

reverse gear)

 Front camera input
 Front camera input can also be used as an Auxiliary Video Input (Crux part# AUX-MB2, OBD2 Audio Aux

coding, may be required to create an Auxiliary Audio Input) (Sold separately).

 Automatic switching to rear-view camera input on engagement of reverse gear from all operation modes
 Forced rear-view camera option
 Manual return from rear-view and front camera (cancellation of automatic switching)
 Compatible with all factory video accessories (e.g. rear-view camera, DVD-changer, etc.)
 Plug & Play installation

 COMAND Online NTG5/5.1, Audio20 NTG5/5.1 with 4pin HSD LVDS connector on the monitor

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Interface Box

MB-78N Harness

Power/CAN Harness

LVDS1 OUT (Female to Female)

LVDS IN (Male to Female)

Setting the DIP switches of the Interface Box.

DIP 1 on the back of the interface box is used to set the monitor type. DIP 2 and 3 must be set to OFF.

Device

DIP 1

COMAND Online NTG5/5.1

ON

7 inch Display

Audio20 NTG5/5.1

OFF

6 inch Display

After each change of the DIP switch settings you have to execute a power reset of the interface box!

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Connecting Interface box and harnesses

Remove the female Quadlock connector of the vehicle harness from the rear of the headunit.

Remove optical leads from the female Quadlock connector of the vehicle harness and insert them into
the female Quadlock connector of MB-78N harness at the same position.

Connect the female Quadlock connector of vehicle harness to the male Quadlock connector of
MB-78N harness.

Connect the female Quadlock connector of MB-78N harness to the male Quadlock connector of the
navigation computer.

Connect the female 8 pin molex connector of the MB-78N harness to the male 8 pin molex connector of
the Power/CAN harness.

Connect the female 12pin AMP connector of the Power/CAN harness to the front side of the VRFMB­78N interface box.

1 2 3 4 5

6

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LEDs of the Interface box

LVDS Connection

Connect the female 4pin HSD LVDS connector of the LVDS cable to the male 4pin HSD LVDS connector
(LVDS-IN) on the rear of the VRFMB-78N interface box.

Remove the Blue female 4pin HSD LVDS connector of the vehicle harness at the back of the head unit
and connect it to the male 4pin HSD LVDS of the LVDS cable.

Connect the female 4pin HSD LVDS connector of the LVDS cable to the male 4pin HSD LVDS connector
(LVDS-OUT) on the rear of the VRFMB-78N interface box.

Connect the female 4pin HSD LVDS connector of the LVDS cable to the Pink male 4pin HSD LVDS
connector on the rear of the head unit.

1 2 3

4

Valid input source
CAN ok
Power

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