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3.4. Connecting of the cable harness
The power supply must be connected to the three power points:
Clamp „31“ – Brown wire to the vehicle ground.
Clamp „30“ – The red wire to the supply voltage before the key (supply voltage is permanently present) in the
range of 12-24V via fuse 2A.
Clamp „15“ – Black-gray wire to the supply voltage behind the key (supply voltage is present only when the
switch box is on) in the range of 12-24V via fuse 2A.
3.5. Connecting to the 24V power system
Vetronics units can also be mounted on trucks and vehicles with 24V supply. In this case, certain demands are
placed on the quality of the onboard power network to which the unit is connected. There are a number of specific
problems for vehicles, such as the use of disconnectors in both the positive and negative branches, various high-
interference devices, the use of welding kits and starter carts. Unfortunately, the condition of the on-board network
is often underestimated.
In cases of obvious damage to the unit by overvoltage or discharge, the guarantee cannot be accepted.
3.6. Connecting a vehicle with 24V supply with disconnector and 12V branch
If the vehicle is equipped with a battery disconnector or with a 12V branch, consult an appropriate connection
with the mobile unit manufacturer.
Warning: In case of improper installation the unit or the vehicle may be damaged.
3.7. Connecting and checking VW AMP connector
The standard cable harness is supplied with 30 wires and is 1m
long with the VW AMP connector ending. It provides mobile unit
connection to power supply from the vehicle's on-board network and
the connection of other peripherals. The length of the cable can be
adjusted for installation. Unused wires must be insulated. In any case,
do not insert the VW AMP connector into the unit before checking the
power connection.
To check the connections, turn on the key and check the
presence of voltage on all VW AMP pins with a voltmeter.
After checking, set the connector lock to "unlocked" position and
plug the connector into the mobile unit with the harness pointing
towards the antenna connector. Finally, switch the lock to "locked" position. The locked connector can be sealed with
wire loop through sealing eyes or with a sticker.
AMP connector pin numbering (contacts point of view) Locking system of AMP connector
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