qwea44
DIY
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Hello folks,
So my van got found after being stolen ;D
Now I'm installing my own alarm on the van which is triggered when a door is opened.
Im stuck with this though;
for the open door trigger i need a 12v when the door is opened (Or 12v when door is closed)
I attached the switched earth cable from the cabin lights to a relay. And on the other end a solid 12v positive.
The relay should now give 12v when the door is opened which it does. But when i close the door it gives around 2/3 volts instead of 0. So my alarm device doesnt recognise the door is closed because it has to be 0 instead of 2 volts.
Also i hear a very loud buzzing noise from the relay for 1 second when i open the door. I worked with relays before and never had this. Normally its just a click
What am i doing wrong Can i fix it with a diode or a resistor or something, so it gives 0 if its below 9 volts?
Any help is very much appreciated.
Barry
So my van got found after being stolen ;D
Now I'm installing my own alarm on the van which is triggered when a door is opened.
Im stuck with this though;
for the open door trigger i need a 12v when the door is opened (Or 12v when door is closed)
I attached the switched earth cable from the cabin lights to a relay. And on the other end a solid 12v positive.
The relay should now give 12v when the door is opened which it does. But when i close the door it gives around 2/3 volts instead of 0. So my alarm device doesnt recognise the door is closed because it has to be 0 instead of 2 volts.
Also i hear a very loud buzzing noise from the relay for 1 second when i open the door. I worked with relays before and never had this. Normally its just a click
What am i doing wrong Can i fix it with a diode or a resistor or something, so it gives 0 if its below 9 volts?
Any help is very much appreciated.
Barry