have my tft flush mounted in the dash and have unsoldered the input select switch and run to a realy on my reverse lights. this is a 5 pin so the display controler thinks the source button is pressed when i go into reverse and pressed again when i come out of reverse. the problem is i forgot to take into account the fact that my display has 3 inputs. vga, s-video (my camera) and a video input. so when i go into reverse it switches from pc input to the camera but when i come out it goes to the spare video input. if i go into reverse again i get the pc back. what i need is a 'thing' that will simulate the switch being pressed once when the lights come on then pressed twice (with a 1 sec interval) when they go off. any ideas? thanks!
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