Installing a car radio on a Citroën C1

unclip the ventilation button using a small plastic lever

You can use a flat screwdriver but be careful not to damage the facade.

and remove it

unscrew the screw, crosshead screwdriver

unclip the front using a plastic lever

Be very careful not to damage the plastics if using a flat-head screwdriver.

finish unclipping by hand

and tilt the whole thing up

disconnect the plug from the warning light, rear defroster and air conditioning

You have to press the central tab of the plug and pull.

tilt the whole thing down

unplug the white plug

You have to press the tab at the end of the socket and pull.

unplug the black plug

unplug the antenna

The front can now be removed.

press the side metal clips

There is 1 on each side.

and slightly spread the 4 plastic lugs

There are 2 on top and 2 on the bottom.

to dislodge and remove the original car radio

It's not easy because you have to press everything at once while trying to take the car radio out.

The original harness is supposed to be ISO compliant but it is not. As it is, the new car radio will systematically lose the settings you have made (stations, time, date, etc.).

here is the C1 beam

you will have to reverse the +battery and +after ignition wires to keep the memory

There are several possible solutions for modifying the beam:

you can cut and use crimp terminals or dominoes

you can cut, weld and use heat shrink tubing

you can use a de-plugger: it's the cleanest and quickest solution

Rather than modifying the car's wiring harness as shown in the previous step, I modified the car radio's wiring harness (it was very easily modifiable in my case). I simply:

identified the wires: black (ground), yellow (+ after contact) and red (+ permanent)

disconnected the red and yellow wires

and reversed the connection

We can take advantage of this to clean the facade.

install a hubcap for a much cleaner result

install the car radio cage

put it firmly in place and bend the fins so that nothing moves anymore

insert the car radio into the front panel

to the limit

present the front panel and connect the 2 car radio plugs

There are foolproof locks so it is impossible to reverse.

connect the antenna

test to make sure everything works

connect the warning, defrosting and air conditioning plugs

clip the facade

Be careful not to pinch any wires.

screw the screw, crosshead screwdriver

put the button in place