i've got a few laying about in the garage i think if you get stuck, but you can open them up and separate all the electrical plates that power up each system and clean them up or get them replated if they are shot

not something you could do with the earlier boxes as everything was integral and you couldn't split them

the other bonus is that the plugs only go in one way so even if you lose one of the labels you put on you should be able to sort them out no worries

when you unplug it just feed the wires out one by one as the plugs on the ends won't all fit through the rubber grommet on the end

as for the alarm, there was a separate alarm module somewhere in the car but i can't remember where they were located as it's been a few years now