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LEDs in storage compartment in dashboard

Discussion in 'Exeo & Exeo ST FAQ's (8T)' started by mcdonald, Aug 11, 2011.

  1. mcdonald

    mcdonald Active Member

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    Recently I added two red LEDs to the small storage compartment in the dashboard.
    The power (12V) comes from the LED inside the ESP switch (brown and blue-grey wire). This way the 2 LEDs will go on when the sidelights or headlights are switched on.

    [​IMG]

    What parts are needed:
    2x 3mm LED red 12V (Conrad, artnr. 182456)
    1x BEC-socket (Conrad, artnr. 208438)
    1x BEC-plugs (Conrad, artnr. 208437)

    After removing the storage compartment the cover on the back has to be removed.
    Here we have to drill three 3mm holes; 2 for the LEDs and 1 for wiring.
    The 2 holes for the LEDs shouldn't be too low otherwise the compartment lid won't open/close anymore. When too high the cover can't be placed back.
    The hole for the wire shouldn't be too low either otherwise the wire can get stuck.

    12V and GND can be obtained from the ESP switch wires. The blue-grey wire is the 12V and the brown wire is the ground.

    I used BEC connectors so everthing can be unplugged if necessary, or when we need the 12V for other things.

    Pictures:

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    [​IMG]
     
    #1 mcdonald, Aug 11, 2011
    Last edited: Aug 12, 2011
  2. OLDOILER

    OLDOILER Full Member

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    I wonder if the same wires can be used to drive a relay for switching off DRL has side lights go on or do you think the CAN BUS sytem will pick up the extra load ??
     
  3. mcdonald

    mcdonald Active Member

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    Better place the relay in the +12V line of the side lights.
    As soon you switch the side lights on the DRL goes off.
     
  4. OLDOILER

    OLDOILER Full Member

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    Yes, thinking about it would be better.
     
  5. mcdonald

    mcdonald Active Member

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    Only the coil resistance might be causing a problem for the canbus system, but I am not sure about this.
    Further you need a protection diode parallel to the coil of the relay, see picture, otherwise the ECU might get damaged.

    [​IMG]
     
  6. OLDOILER

    OLDOILER Full Member

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    Thats a good point!! dam CAN BUS more problems than its worth [ hear that MBenz are reviewing ALL their CAN BUS designs due to poor reliablity/liability in the field, wonder how long before VAG Grp. do the same??]
     
  7. mcdonald

    mcdonald Active Member

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    If you want to install aftermarket DRLs why not using a DRL Lamp Module?
    These modules are not expensive and will switch between the DRL's and headlights. In some cases they will dim the DRL's with 50% when the headlights are switched on.

    See here for an example: https://www.dectane.de/DRL/Daytime-Running-Light-Module-54385.html
     

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