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I cannot see, from my drivers seat, if the tailgate is down. Once I wasn't paying attention and drove off with my Honda inverter gen sitting on it. Went half a mile, never fell off. I got lucky but have been paranoid ever since. I want to wire a circuit to illuminate an LED in my cab when it's open. Seems simple but how would yall do it? What components would you suggest and where can I get them?

I cannot see, from my drivers seat, if the tailgate is down. Once I wasn't paying attention and drove off with my Honda inverter gen sitting on it. Went half a mile, never fell off. I got lucky but have been paranoid ever since. I want to wire a circuit to illuminate an LED in my cab when it's open. Seems simple but how would yall do it? What components would you suggest and where can I get them?
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[–] • 1 pt

Here, give some time, I'll give you a diagram for a circuit that will do the following:

  • Work with 12 Volts. Can tie grounds to frame.
  • Keep the status LED on when the tail gate is closed (to verify the system is working).
  • Blink the LED when the tail gate is open.
  • Trigger mechanism is magnetically based (Hall effect sensor), having no moving parts. It will depend on adding a magnet to the tail gate.
[–] • 1 pt

https://imgbly.com/ib/N2t5thqMdp

@AgainstTheGrain

BOM: Allergo A1121 555 timer (18V+ tolerant) LED 2 * 2.2k resistors 1 * 3.6k resistor 1 * 1k resistors 1 * 220k resistor 1 * 2.2u capacitor 1 * 0.01u capacitor

[–] • 0 pt

You sir, are the fucking man. That's what I'm talking about!