|
Re: headlight buzzer?
Any 12 volt buzzer will work. If it is polarized (+ and -) hook the - to a switched 12 volt source and the + to the dash lighting (easy to get off the fuse panel, or from the radio wiring harness). If it is a non polarized buzzer, get a diode;
some ascii schematics; --|<-- is the diode, note polarity of diode
switched 12volt -----|<------buzzer---- lighting circuit.
With the lights off, engine on, the buzzer is wired in reverse and will be quiet. If you turn on the lights, both sides of the buzzer are the same polarity and it will be quiet. If you turn off the engine, the switched 12volts becomes your ground path and the buzzer will sound until you turn off your lights. Also handy to add to car that only sound the headlight buzzer when you open the door and it gets drowned out in ambient noise.
Alex.
|