to use an external power supply. there is a small rubber cover in the hinged door of the camera. underneath sits a 6mm hole where the cable can go trough. Use a VERY small connector. i strip the cable for about 5cm and tin it completely. then I begin on the bottom and bending them around the edge. negative/black goes near the corner, positive/red to the center. You have to measure a few times so the stripped part ends near the big hole. there you can make a knot. bond the tinned wires to the case with a soldering iron. then apply 4.3 volts, 1A minimum to the wires and you are up and running.ver date comment 1.0 03-09-2011 initial version 1.1 03-09-2011 increased curve resolution 1.2 04-09-2011 used union() initial print 1.3 10-09-2011 corrected round holes. output hole smaller, bottom of big hole thicker, increased small hole size for the contact wire