Help! aftermarket head unit, now the key fob is playing up

Fitted an aftermarket head unit yesterday and now the key fob is playing up
Ive attached a pic of the same prob i now have please help

Hi LouLou1986, welcome to the forum.

LouLou1986 wrote:Fitted an aftermarket head unit yesterday and now the key fob is playing up

Your stereo was not fitted correctly.

Wires on Pins 4 and 7 of the ISO power plug need to be switched over to make the aftermarket stereo compatible with the Citroen C3 wiring.


ISO plug


A is the power, B is for speakers

So unplug them and switch them around?

Thank you for the welcome, will prob be on a lot as theres buttons i dint even understand on my lil sid lol

LouLou1986 wrote:So unplug them and switch them around?

Yes, this is possible but not very easy, its very fiddly and you need to know what you are looking for.

Most people would just cut the wires and crimp join them (link).

My only concern is that if you couldn't fit he stereo yourself, you probably wouldn't get involved in cutting and rejoining the wires as this is the most difficult bit when it comes to fitting a stereo.

The crimp join them (link) has a list of tools and a youtube video on how to cut and crimp wires.