Hello, Please could someone tell me if I can plug this in to the mains? I have a LED strip light under cupboard in the Kitchen 120 cms. I went to the electrical shop and the man gave me a transformer. The wire from the LED strip light is in the first picture. Can I cut the plastic bit off the end and connect it to the Transformer wires : positive and negative and wrap some electrical tape around it? will it be ok to plug in? Regarding the transformer the transformer I needed a 12v, 2.5 amp, max 30 watts. The transformer has written on it 3 amp, 12v dc. Please see second photo. I worried to plug it on the advise of the man in the shop. Please advise. Thank you in advance.