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Help needed! Answered

Hi!

I'm kind of new here, and I need some help. I have remote control dump truck in 1:14 scale, and I'm going to make a trailer for it. The truck itself has lights (blinkers, reverse, brake, standlight, etc.). So would it be possible to make some kind of wireless control system for trailer lights, so I don't need to connect always cable to the trailer? There is one wireless control system for situations like this, but it's so expensive.
  I have been thinking about making it with IR leds. Is it possible to make it work by connecting IR led to for example reverse light's cable and then some kind of IR receiver to trailer? Give me some ideas and if you have some solutions or something that would help, let me know. :)

Thanks for help
( my english may be bad, i'm from finland :D )

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