7
7 Mechanical Installation
Mount the device on a flat surface (metal base plate) free of tension using two M5 screws.
No push or pull force should act to the device. Area of Installation must be protected from
spray water and 30cm away from hot engine or exhaust parts. Maximum ambient temperature
must not 80°C or go below -20°C.
All warranties and extended warranties will be deemed forfeit in case of mechanical damage to the
device.
The m-Unit is connected to vehicle ground by the two mounting screws. Therefore one of
the mounting screws must connected directly to battery minus terminal. The necessary
cable cross section for this connection cable is 1.5mm².
8 Electrical Connection
8.1 General
The device is working in a voltage range between 6 to 18V direct current. Use in vehicles without
battery is not possible.
Make sure that the vehicle is equipped with interference suppressed spark plugs or ignition
cables. The minimum distance between ignition coil or high tension cables and m-Unit must
not be below 30 cm.
8.2 Safety Functions
Currents in the range from 18-40V (e. g. in case of defective controller) will trigger the
activation of the horn. This prevents unnoticed battery cook-off and damage to appliances
due to continued driving.
Loose cables can release currents from 40-80V. In this range, the m-unit activates all
appliances to protect itself. However, the resulting protection is only short term and
prolonged (several seconds) or repeated currents surges will burn out the connected
appliances (e. g. high or low beam light bulbs). When the current surge can no longer be
compensated, burn out occurs and the respective output will become damaged
permanently. Such damage is indicated by the defective/dysfunctional high or low beam
outlet. In this case, all warranty claims will become forfeit.
Reverse polarity of the battery will cause the activation of all connected appliances to
protect the m-unit.
PLEASE ENSURE TIGHT BATTERY CABLE CONNECTIONS. WHILE THE ENGINE IS
RUNNING, LOOSE CONTACTS CAN CREATE STRONG CURRENT SURGES ABLE TO
DAMAGE APPLIANCES AND M-UNIT BEYOND REPAIR.
8.3 Fuses
While the m-unit itself does not need a fuse, the implementation of a vehicle main fuse is
mandatory since the voltage regulator (connected to the battery via the main fuse) might
malfunction and create a short circuit.
If cables with a lesser diameter than indicated in Chapter 8.4 are connected (e. g.
motogadget instruments or the m-lock), they have to be protected by the included fusible
links.
