Yes I know what the answer is and you're going to shoot me down in flames... but I'm tired of calling in a sparky every time one of my downlight transformers die. I've seen how they work and how he screws the wires back in .... how unsafe is it for me to replace one of these myself and match the wires as per the transformer being replaced, shutting off all power etc. I know the right answer yeah yeah... but come on surely I could do this technically and save some coin......?