car anti-thief system

YHC-38 Car Hidden Alarm, is an economic and effective way to avoid auto car being stolen. It is easy to be installed and has reliable performance. At present, there are many kinds of auto car alarm in the market, however, most of then have a fatal fault, which the alarm will be found easily by thief, and unchained violently by thief. The great advantage of YHC-38 Car Hidden Alarm is that the thief doesnt know there is alarm or not. Unchain: start the engine directly, at the same time, turn on a appointed switch in the car one time, which appoint at the step 2.4. The alarm will be unchained. OK, Drive now! Guard: After stopping the engine, the alarm system can cut off the power of fuel pump automatically, you dont need to do anything. The car will be in the guarded status. Installation: Install the Hidden Alarm at a concealed place, near to the fuel pump circuit. Find the lead wire of positive pole (+12V) and negative pole (Ground), which supply power to car fuel pump. Cut off positive wire of the fuel pump, and connect the hidden alarm to the circuit of fuel pump as showed in picture . 2.4 Connect the white unchaining wire to a appointed part by driver,such as brake lamp,corner lamp, driving lamp, reading lamp or other electronic equipment which can be controlled through a switch in the car. car anti-thief system