germany said:
Ok thanks for your advice even though my english is not good enough to understand everything you wrote.
It's so irritating that some people say: no matter how you plug the fuse into your car and some others say it's very important to measure it where 0 Volts come out because on this point there has to be the fuse with the wire...
OK it appears I didnt read it well enough
What you actually want to know is
"how to insert a tapped fuse" so that the fuse still works as it should.
Ok thats different to just how do I insert a fuse.
If you want to use it that way you put it in with the tapped wire on the "OUT" end and then if the fuse blows the camera will turn off.
HOWEVER if the fuse you are using is more than 2 amps you will need to also retain the lighter capacity fuse in the line
EG I have a tapped 10 amp fuse in the fuse box running to a ciggy socket and have the camera power supply which has a 2 amp fuse plugged into that.
The camera would go on fire before it blew a 10 amp fuse but would blow a 2 amp with a small fault
The correct way to check for voltage with a multimeter Is put you settings on the meter on DC Voltage and range on 20 v
Connect the BLACK terminal to a metal body part Like a bolt head on a door hinge. Making sure its through the paint.
Then use the RED terminal to probe in the fuse box to find a live socket.
Remember if the ignition is off you will only find ALWAYS ON fuses.
If you want a feed which switches with the ignition note which ones are always on and then turn ignition on and probe again When you find a different one on hold the probe on it and turn the key off.
It should then go back to NO voltage Use that one
There is usually some spare sockets not being used and its better to use one of them than disturb one thats being used especially the airbag ones.
Your picture looks like a VW if so what model as I have a POLO and a PASSAT and can maybe tell you the exact fuse to use