LED interior lighting issue

Discussion in 'KJ General Discussion' started by SWilliams, Jan 19, 2016.

  1. SWilliams

    SWilliams Full Access Member

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    So decided that the factory interior lighting just wasn't doing the job. Picked up a few LED replacement bulbs for the map lights and rear cargo light. Tested them and they are BRIGHT. Ran into a problem though. The rear cargo light doesn't shut off fully if the key is in the ignition. When you open the door or turn the switch on and the light is on as it should be. But regardless of what you do the light glows dimly if the key is in the ignition. Doesn't matter if the engine is running or not. Sort of annoying to have the glow in the mirror at night.

    I think it is due to the BCM and how it monitors the rear light switch to determine if you want the courtesy lights on/off. I'm thinking that I might install a small relay in place of the bulb and use it to turn the lights on/off.

    Just wondered if anyone else had tried LEDs inside and had the same issue?
     
  2. tommudd

    tommudd Moderator Staff Member Moderator

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    Seems all who have done that have the same issue. Not enough resistance in the LED bulbs . Install an in line resister
     
  3. teeje

    teeje Full Access Member

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    They do this because they issue approximately 1/10th of the power standard bulbs use


    2002 Jeep Liberty 3.7L with brand new engine ;)
    Sent from my iPhone using Tapatalk
     
  4. fishyx

    fishyx Full Access Member

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    I just put the incan back in the rear dome and live with it. I still get a very slight glow from the front dome LEDs but not very noticeable. They really do make a huge improvement over the factory incans.
     
  5. SWilliams

    SWilliams Full Access Member

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    Now that I know it's a common issue I'll play with some pieces and see if there is a good work around that doesn't involve adding resistance, which sort of defeats the reason for using the LEDs in the first place IE: lower current draw.
     
  6. featherlight

    featherlight Full Access Member

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    I have been using these: Amazon
    $12 (free shipping with Prime)
    No flicker and no issues with them remaining dim when turned off.:party52:
    [​IMG]
    You want to make sure that they are CANBUS compatible; a lot of the German cars require these too. The cheaper ones usually aren't compatible and will flicker or stay very dimly lit. There are even some nice 2-stage LEDs for brake lights (that are actually dim and then bright when braking), but they are something like $20 a pair.
     
    Last edited: Jan 20, 2016
  7. derost

    derost New Member

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    I put in Yorkim canbus "error free" bulbs I got on Amazon and am also having the same problem. I thought for sure the canbus bulbs would solve the issue but as mentioned they are still dimly on. The map lights aren't too distracting, but the rear dome light certainly is. Would really love to hear a fix as I really enjoy, and need, the extra light they produce.

    Doug.
     
  8. jeeplib05

    jeeplib05 Full Access Member

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    It happens with cheap LEDs
    I got higher end ones and they still do it- even tried to put a resistor in the circuit and it didn't do anything so I got used to the dim light
     
  9. tjkj2002

    tjkj2002 Full Access Member

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    The BCM controls the interior and exterior lights by grounding the circuits,it's all resistance based and LED's do not have enough resistance for the BCM to fully turn off while running.

    I would not add any resistors for the interior,they get hot and are a major fire hazard when placed in the interior.Either live with them being on very dim(like most do) or go back to regular bulbs.
     
  10. JBDive

    JBDive Full Access Member

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    Don't replace the driver's floor light, leave in the stock one. This will give the system the needed resistance or whatever the electrical term is so the lights function correctly. I just did this myself a month ago, love the overhead and cargo LED's, back seat is still to dang dark with no lights there.
     
  11. GitEmSteveDave

    GitEmSteveDave Full Access Member

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    There's a floor light?

    I replaced the maps (https://www.amazon.com/gp/product/B014K7F2SI) and the rear (https://www.amazon.com/gp/product/B013TXLTRM) w/LED and not the floor light and live with the dim lights. You get used to it.
     
  12. JBDive

    JBDive Full Access Member

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    Might be a Limited upgrade but willing to bet the wiring is there on all models. Passenger side is recessed in a round hole about 2 inches from the front of the glove box. Driver side is centered and recessed as well, more so though thus part of the reason a brighter light doesn't help.

    Can't imagine not having LEDS in now after using them all summer. the brightness level is just amazing.
     
  13. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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  14. nbas

    nbas Full Access Member

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  15. JBDive

    JBDive Full Access Member

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    Holy crap that's a huge cargo light. Get calls from the airport tower to turn them off?

    I'd be worried about heat with that many LEDs in the cargo light box.