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21
MOUNTING RECOMMENDATIONS
21.1
Connecting Wires
Wires should be connected while module is not plugged in.
Wires should be fastened to the other wires or non-moving parts. Try to avoid heat
emitting and moving objects near the wires.
The connections should not be seen very clearly. If factory isolation was removed while
connecting wires, it should be applied again.
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.
Wires cannot be connected to the board computers or control units.
21.2
Connecting Power Source
Be sure that after the car computer falls asleep, power is still available on chosen wire.
Depending on car, this may happen in 5 to 30 minutes period.
When module is connected, be sure to measure voltage again if it did not decrease.
It is recommended to connect to the main power cable in the fuse box.
Use 3A, 125V external fuse.
21.3
Connecting Ignition Wire
Be sure to check if it is a real ignition wire – power does not disappear while starting the
engine.
Check if this is not an ACC wire (when key is in the first position, most electronics of the
vehicle 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.
21.4
Connecting Ground Wire
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 place where loop is connected.
PAY ATTENTION! Connecting the power supply must be carried out in a
very low impedance point on-board vehicle network. These points in the car
are the battery terminals. Therefore, we recommend connecting the power of
FM6320 (wire GND and POWER) directly to the battery terminals. Another valid
option is to connect the wires to the main POWER cable inside the fuse box (if
there is none, then to the power supply where the fuses of vehicle’s computer
are), wire GND must be connected in a special point, designed to connect GND
vehicle computer. 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
Содержание FM6320
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