10
Mounting recommendations
•
Connecting wires
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Wires should be fastened to stable wires or other non-moving
parts. Any heat emitting and/or moving objects should be kept
away from the wires.
▬
There should be no exposed wires. If factory isolation was
removed while connecting the wires, the isolation material
should be applied.
▬
If the wires are placed in the exterior or in places where they
can be damaged or exposed to heat, humidity, dirt, etc.,
additional isolation should be applied and the wires should not
be loose.
▬
Wires cannot be connected to the board computers or control
units.
•
Connecting power source
▬
Be sure that after the car computer goes to sleep mode, power
might be still available on the power wires. Depending on the
car model, this may happen in 5 to 30 minutes period.
▬
When the module is connected, measure the voltage again to
make sure it did not decrease.
▬
It is recommended to connect to the main power cable in the
fuse box.
▬
3 A, 125 V external fuse shall be used.
•
Connecting ignition wire
▬
Be sure to check if it is a real ignition wire i. e. power does not
disappear after starting the engine.
▬
Check if this is not an ACC wire (when key is in the first position,
most of the vehicle electronics are available).
▬
Check if power is still available when you turn off any of vehicles
devices.
▬
Ignition is connected to the ignition relay output. As alternative,
any other relay, which has power output when ignition is on,
may be chosen.
•
Connecting ground wire
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Ground wire is connected to the vehicle frame or metal parts
that are fixed to the frame.
▬
If the wire is fixed with the bolt, the loop must be connected to
the end of the wire.
▬
For better contact scrub paint from the spot where loop is
going to be connected.
PAY ATTENTION! Connecting the power supply must be
carried out in a very low impedance point of on-board
vehicle network. Connecting the GND at an arbitrary point
to the mass of the car is unacceptable, as static and dynamic
potentials on the line GND will be unpredictable, which can
lead to unstable FMB208 operation and even its failure.
