Fuel cut off switch

[gkevin4]

Hi guys
I’m a newbie on here.
I’ve got a 2020 Citroen relay.
I’ve converted it into a camper and I’m worried about security. I’ve got a steering and pedal locks.
I’d like to fit a fuel cut off switch.
So if someone could tell me where the cable is for it.
And the colour, I’d appreciate your help
I had a fuel cut off switch on an old defender. It was broke into several times but never taken.
The switch did the job.
Now it’s the Citroens turn.

[Dekzion]

I've got a wifi heavy relay on the negative side of the battery (E**Y) Cuts out everything and stops battery drain too. Got fed up of putting code into radio so installed diddy rechargeable 12v battery and 12v to 12v charger which happily feeds the radio when everything is off.