Fuse #7, down right.;)
Most probable cause is the fuse.
Fuse box is located on the right bottom side wall near the passenger front seat. Two screws to open the side wall box. There will be a drawing on the cover to show you which fuse. I think it is fuse #6.
Open the glove compartment. You will see a small oblong shaped opening. This is the diagnostics connection. Inside are extra fuses located and if you consult the Citroen handbook, this entire compartment comes out. The fuse box is located inside and fuse for 12V accessories socket is F7.
It is a 20 amp fuse and located in position 27.
Fuse # 22 is a 20 amp fuse for the auxiliary power socket ( open the drivers door and the fuses are behind the cover in the drivers end of the dash )
It's the fuse for the 12V power point located just below the cigarette lighter.
It depends if you want it to be turned on when the key is on. If it doesn't matter then just find 12V in the fuse panel (before any pre-existing fuse), jump it to a open fuse spot, insert the appropriate fuse, run the other side of the fuse and you have your power. Get an inexpensive multi-meter, it will make your life a lot easier. Good luck.
The voltage is written on the fuse.
yes
It's under the hood in the fuse box located on the left side of the car. It has a snap on cover. You can't miss it. The fuse box under your steering wheel holds the fuse for the "cigarette lighter" located under your radio.
The fuse for the 12 V dc outlet is the top left fuse on the 2001 model, in the fuse box located near the feet of the front seat on the passenger side. It's a 15 A mini fuse.