Recently bought this nav and have one clue what this is when punch button in red light comes on any ideas ??
^^^^yup^^^^ and agree with others - it's a simple remote switch - could operate anythingHave you followed where the wires go?
Looks similar to this
http://www.dx.com/p/universal-wired...te-control-switch-for-car-led-lamp-black-dc-12v-140cm-cable-102449#.WuYP_svTUwA