USED Maplin model YK21X power transformer for Maplin Mosfet 150 module. Made by Antrim transformers ltd, in May 1989. Colour coded as follows...pair of orange cables are for live and neutral connection. The red to yellow and blue combined to grey is the 39-0-39 volt AC secondary windings. I am making an assumption that the buyer is competent in wiring the transformer to mains(240 volt ) supply. This involves LETHAL voltages and could seriously hurt of kill if incorrectly connected. You have been WARNED of the SAFETY issue involved. If in doubt please consult a PA or electronic engineer for your own safety.Freepost to any UK postcode ONLY. Thanks for looking and happy bidding!!! 14March. PS;-I have added 2 photos 4 and 5 which show correct dished mounting washer and also with a pair of homemade insulation pads from an old mouse mat. They work, but would recommend correct rubber ones.This was only designed for use with ONE maplin mosfet 150 module.thanks for looking. 16March.The wires were just cut to remove transformer from old amplifier.....hence no showing of wire ends. I have twisted the yellow and blue leads together as they are for the 0 in the 39-0-39 secondary winding. Just to clarify. I am sure the techies out there know this anyway. 6th MayPostage has increased so price has increased a little.(sorry its a post office increase)