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Thread: e46, Rear-View, Relay... suggestions to relay...

  1. #1
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    e46, Rear-View, Relay... suggestions to relay...

    So I've had this rear-view mounted in my keyhole for over a year now. I hooked it up to my reverse lights to get power, thinking that would do the trick.

    Well it sorta did -- though from what I recall, the power to the backup lights are intermittent, and not a solid source of power... which works to some degree, but the picture is almost fuzzy at best...

    Again from what I recall I need to have a power relay switch that will let me have a power supply of clean power, but get triggered from something like the reverse lights going on.

    Any suggestions or threads that you're aware of that I couldn't find that may help me out?

    Thanks everyone!

  2. #2
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    Ok, so I stumbled upon a page that gives a huge walkthrough (overkill for what I'm wanting) of integrating tv/rear-view into a 7 series... but the takeaway here for me is the mention of the relay switch

    (if interested http://www.bimmerboard.com/forums/posts/140540/ )

    They mention a 'Standard Automotive Relay" ... with a picture!


    Any recommendations for a particular relay such as this?

  3. #3
    Maximum Bitrate bes51659's Avatar
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    Intermittent power to backup light!?? Are you sure? If so, a relay will not help you.

    Have you connected to the right wire?

    One thing that might cause a problem is the "lamp fault detection". In that case the relay might help. I am sure any car relay on the nearest gas station will do.

    Hope it helped-

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    Yes actually. Matter of fact, I think i've found the identical one listed that the guy used (based on just the picture) : The Pilot PL-RY1 for $7.99

    I don't mean intermittent... again from memory, but the way it was explained to me was that the reverse lights do not get a steady source of power.. but a variable -- very fast, but variable... such that it wont sustain solid power to power the cam... but enough to trip a relay.

    ... then again I could have gotten some crappy data too . I know the cam works, hooked it up in the house just fine.



    -- Matt

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    Do you have LED taillights or standard incandescent bulbs? If it's LED then my guess is they are powered with a PWM signal to control brightness, which would match with what you are describing.

  6. #6
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    Nope. They're not LED lights...

    I'm going to go test this again, using a straight-wired 12v power just to see..


  7. #7
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    whelp... I feel like a real big dumb-dumb ...

    I have no idea what happened from last time to this time... but it works perfectly. go figure...

    Thanks for the input anyway guys

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