its quite easy to do start by removing the cap/bung ant the bottom by pushing in the so lock buttons, under the rubber cover on the switch unscrew the threaded plastic locking nut on the on the power button looks like a washer, pull it gently out from the inner handle and snipp the hard plastic covered wire thats conect to the more supple red and black wire and then strip of the end of the wires that are connected to the switch to exspose the bare wire, now with a good electric lead cut from the wifes tumble drier lol or old exstension lead or lawm mower wire get it to the length that will su