wiring

Hi all, Just purchased a beer font and would like to use the 12v light on it (the standard black+ red wires) Just having a glance online and all transformers are quite expensive so have been looking for alternatives. I have a giant box of wires and came across this adapter. Is this the right...

Hi, Hopefully this is the right place for this question. I have a fridge I'd like to rewire to bypass the thermostat, which I'll remove and then control from a relay with an arduino. I've seen guide on this but my fridge had 5 wires going into the thermostat. I count one earth, one neutral...