Which wire on UXB

[PEDANTICVINDICTIVEMAN]

I found a UXB in the back of the airing cupboard, there were only 4 screws holding the front on, I'm not sure which of the 3 wires to cut on the detonator, I cut the red wire as I thought it looked easy and seemed silly to pay someone who knows what they are doing, now I am paranoid if I have left it dangerous with it still having a pipe which looks like a vent coming out the back, I have done this with a match to see as it's dark behind the hot tank, well I think it's the hot tank, it's big dark green with some German Writing on it, is it a Worcester bosch ?, anyway, should I cut the Yellow wire first or the blue wire.

 

[DP]

I think you should GTF out of there PVM to fight another day.

 

[PEDANTICVINDICTIVEMAN]

BOOM oops

 

[Burnerman]

You should have shaken, not stirred it 007