Citigo 2013 aftermarket Stereo - which switched 12v fuse to use for piggyback?

[Scribbler]

I'm helping my son out who's got a 2013 Citigo Sport. We have removed the OEM stereo fitted an aftermarket facia and a Sony Head unit. We have connected the permanent Live (Yellow Wire) and ground (black wire) using a harness adapter kit to the original connector to save splicing cables. The switched 12V wire (red) we have routed to the fuse box under the steering wheel and used a crimp on Piggy back fuse holder to connect to Fuse 31. This was a Red 10amp fuse and according to a youtube video a switched 12v supply. However when we put both 10amp fuses in the piggy back holder and connected it to the socket the radio powered on even though the ignition wasn't turned. It doesn't turn on and off with the ignition so assume 31 is a permanent 12v supply. We don't have a multimeter to check which are switched with the ignition and only have the piggyback for the micro blade fuses not the larger ones. Could someone point us in the right direction of the switched 12v supply preferably 10amp. 

 

https://www.youtube.com/watch?v=AHgPWzki6Bw&t=661s

(Video we used which shows piggy back fitted to 4th fuse along from right middle row ( which according to diagram is 31) This on ours isn't switched live but constantly powering the stereo.

 

Cheers!!!

Edited 7 January, 2023 by Scribbler

[Scribbler]

Sorted it used Fuse 18 which i think is for the reverse light switch. Works fine now.

[Mijoha74]

I just the red and white wire from the aircon wire from the dashboard

[Mijoha74]