![]() which will stabilise the voltage if taken from the bulb power source.Īlternatively, if the head unit / monitor you are installing to is able to detect the reverse trigger via a decoder system, then you would not need to worry about using a trigger from the reverse bulb. To solve the situation, we have developed our own reverse camera relay. ![]() Hence, it doesn't work when the engine is started on the vehicle. This means when you start the engine, you do not have a stable voltage feed that the camera system requires in order to function. So as the charging voltage the power is switched on and off several times a second. Pulse width modulation (PWM) is a modulation technique that generates variable-width pulses to represent the amplitude of an analogue input signal. The vehicle will use PWM to power the lamps. ![]() This is usually because the vehicle has a bulb monitor system (the dashboard will tell you when a bulb is out) or a networked lighting system via Canbus. ![]() Many European branded vehicles will have a reverse bulb power that drops below the required +12v the camera requires to turn on / function. A multi-meter is key when installing a reverse camera and if it is not working, then the multi-meter will usually tell you where the break-down is and then you can solve from there. ![]()
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