I ran a small Sony TV in the instrument cluster of my car for many years=20 with just a 7805 mounted on a piece of scrap sheet aluminum. I picked up=20 the +12v at the fuse panel. Crude but very effective. Temperature of=20 heat sink was monitored by an occasional finger touch... On 12/25/2013 10:46 AM, Carl Denk wrote: > The plug into auto's cigarette lighter plug/cord for my Lowrance > I-finder color handheld GPS fried. --=20 John Ferrell W8CCW "It does not matter How many resources you have, If you don't know how to use them, They will not be enough" --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .