Instructions for Use

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1>How to find the power cord of the car ?
First turn the car key to the ACC state. Then regulate the Universal Watch
to the 20V gear. Connect the black stylus to the power ground (the outer
ironclad of the cigar lighter) and use the red stylus to test each wire of the
car. Normally a car has two wires about 12V(some cars only have one). That
is the positive pole line. How to distinguish the ACC and memory line? Pull
out the car key after you find the two positive pole lines. The memory line is
the electrically charged one after you nu plug the key. *(Look the Picture 1)
2>How to find the ground wire of the car (negative pole)?
Turn the Universal Watch to the on/off beep gear. Then connect the
black stylus to the power ground (the outer ironclad of the cigar lighter) and
use the red stylus to test each wire except the two power lines. The
energized one is the ground wire(negative pole). Some cars have two ground
wires. • (Look the Picture 2)
3>How to find the horn line of the car?
Turn the Universal Watch to the on/off beep gear. Connect the black
stylus to any wire except the power cord and ground wire. Then use the red
stylus to test each remaining wire. The energized one is the horn wire. Then
use the same method to find out the other horn lines. *(Look the Picture 3)
4>How to test whether the unit work properly?
When you get the unit, you'd better test the unit with battery or power
supply before installation. Wire connection method: Twist the red wire and
yellow wire together and then connect them to the positive pole. Connect
the black wire to the negative pole. Then press the switch to turn on the unit
and get a horn to connect to the horn wire. (Two wires connected to the
horn are of the same color. The white wire is supposed to be connected to
the positive pole and the white one with black part connected to the
negative pole of the horn. You can make no distinction between the positive
and negative poles of the horn.) Then test the function of the unit.
5>How to connect Bluetooth?
Turn on the unit and initiate Bluetooth function of phone, and then