W203 Reverse activated 12V supply

Discussion in 'Electronics' started by Sprint-Man, Apr 13, 2014.

  1. Sprint-Man

    Sprint-Man Member

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    Where can I pick up a 12V supply that is activated by selecting reverse on my C180K (05 Saloon/Classic), I'm fitting a Parking Sensor and the current draw is minimal, any of you experts already installed one?
     
  2. reflexboy

    reflexboy Hardcore MB Enthusiast

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    The wire feeding the reverse light bulb
     
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  3. DennisTheMenace

    DennisTheMenace Member

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    Or if the rear light signal is too low, use a 4 pin relay and find a good 12v signal and use the reversing light signal to trigger the relay.
     
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  4. miro

    miro Hardcore MB Enthusiast

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    From the parktronic socket on the rear Sam.
     
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  5. umik

    umik New Member

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    I've been told it's the blue and grey one, brown is the earth. Not 100% sure
     
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  6. markmifsud

    markmifsud Hardcore MB Enthusiast

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    You could pick up the feed via the switch on the autobox, I believe it sits to the front right of the gear shift lever. I found it to be less hassle to just run a wire from my rear light cluster back to the HeadUnit.
     
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  7. shorty

    shorty Hardcore MB Enthusiast

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    Take a feed from the reversing light at the light cluster . Ive fitted these systems countless times , very easy .
     
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  8. miro

    miro Hardcore MB Enthusiast

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    That is the easiest thing. Always.
     
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  9. mr. shr

    mr. shr Hardcore MB Enthusiast

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    That's what I did when fitting sensors to a W211 recently.
    All works just fine.
     
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  10. OP
    OP
    Sprint-Man

    Sprint-Man Member

    Messages:
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    Spot-On, Blue with a Grey Tracer it is, many thanks!
     

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