Nav TV MB25 User manual

BHM
11/06/14
NTV-DOC041
rB1
Agreement: End user agrees to use this product in compliance with all State and Federal laws. NAV-TV Corp. would not be held liable for
misuse of its product. If you do not agree, please discontinue use immediately and return product to place of purchase. This product is
intended for off-road use and passenger entertainment only.
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3950 NW 120th Ave, Coral Springs, FL 33065 TEL [phone] FAX [phone]
www.nav-tv.com i[email protected]m
MB25 Kit
NTV-KIT077
Overview
The MB25 Kit programs the MB25 radio in select Mercedes vehicles for TV tuner emulation,
allowing the user to add video and audio to the OEM system. If used for adding a reverse
camera, please note that the TV button (or blank or SAT button) will have to be pressed every
time the user wants to view the camera image (before shifting into reverse).
Kit Contents
MB25 Programmer/Converter
NTV-ASY132
Video Input Harness
NTV-CAB022
Audio Input Harness
NTV-CAB020
Remote Control
NTV-REM001
MB25 Power Cable
NTV-CAB034
Note: If the vehicle is equipped with SAT Radio, it will no longer function with this kit installed.

BHM
11/06/14
NTV-DOC041
rB1
Agreement: End user agrees to use this product in compliance with all State and Federal laws. NAV-TV Corp. would not be held liable for
misuse of its product. If you do not agree, please discontinue use immediately and return product to place of purchase. This product is
intended for off-road use and passenger entertainment only.
2 | P a g e
WARNING!
DO NOT power up the NAV-TV MB25 until the end! Connecting the power to the RGB is the LAST step (for
install). Follow directions carefully as this module will only attempt programming ONE time!
Interface Connectors
Wire Connections
1. Remove the factory MB25 radio from the dashboard and set aside.
2. From the MB25 module, connect the Blue wire to PIN 17 (18-pin plug see below). If
there is already a wire populated here, splice into it.
3. On the radio, at the 18-PIN plug shown below, locate PIN 1 (18-pin plug see below).
Cut this wire in half.
4. From the MB25 module, connect the White wire to the RADIO SIDE of the cut wire at
PIN position 1. NOTE: after programming, this NAV-TV wire must be removed and the
previously cut wire MUST be restored to factory.
18-PIN
connector where
white and blue
wires connect to.
The connector’s
pins are labeled,
look closely
Video
Input
Harness
connects
here
Audio
Input
Harness
connects
here
Power port
RGBS vs Sync Over Green
switch (leave on RGBS)
Plug & Play RGB
connector
AUX Video
Camera IN
The attached toggle switch is not used.

BHM
11/06/14
NTV-DOC041
rB1
Agreement: End user agrees to use this product in compliance with all State and Federal laws. NAV-TV Corp. would not be held liable for
misuse of its product. If you do not agree, please discontinue use immediately and return product to place of purchase. This product is
intended for off-road use and passenger entertainment only.
3 | P a g e
5. Connect the provided Video Input Harness to the
MB25 kit and the back of the radio at the port
labeled in the figure on page 2.
6. If audio input is desired, connect the audio source to the RCA’s
on the provided Audio Input Harness. Connect the other
end to the audio input port behind the radio (see image
on page 2).
7. If reverse camera is desired, connect the Green wire to a reverse 12v (+) wire in the car.
Power your rear camera with an accessory 12v source, and connect the signal to the
Video 2 port.
8. From the provided MB25 Power cable, connect the black wire to ground (-).
9. From the provided MB25 Power cable, connect the red wire to a 12v
(+) accessory source.
DO NOT Connect this power connector to the MB25 module yet.
10. Reconnect remaining harnesses to the MB25 radio, set the radio in the dash (don’t
secure fully) and turn the car on. Wait for the radio to boot fully and settle.
11. Connect the MB25 Power cable to the MB25 module. If all connections are correct, the
radio will go into programming mode –wait for the process to complete (color bar, etc).
12. Once programming has completed, REMOVE the NAV-TV white wire from step 4 and
reconnect (solder) the cut OEM wire at PIN 1 (from step 3).
13. Your ‘SAT’, ‘TV’ or blank button is now activated. Connect a video signal to the MB25
module at the VIDEO 1 port.
14. Test to verify operation.

BHM
11/06/14
NTV-DOC041
rB1
Agreement: End user agrees to use this product in compliance with all State and Federal laws. NAV-TV Corp. would not be held liable for
misuse of its product. If you do not agree, please discontinue use immediately and return product to place of purchase. This product is
intended for off-road use and passenger entertainment only.
4 | P a g e
MB25 Operation
To use TV tuner emulation, press the ‘SAT’ or ‘TV’ or [blank] button once with the radio on.
Video (and audio) source provided to the MB25 module and radio will display.
If using this kit for a reverse camera interface, the Green wire must see 12v (+) while in reverse.
This wire must be connected to a reverse light.
Note: the activation button (from above) must be pressed once before going into
reverse in order for the rear camera image to display. This is a factory limitation.