Leds

Discussion in 'Tech/Mech General' started by albial, May 18, 2015.

  1. albial

    albial Funster

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    Anyone any ideas please I want to change the daylight running lights on my Ford based hymer from halogen to led. The bulbs in now are PY 12v 21w. Thanks
     
  2. tonyidle

    tonyidle Funster

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  3. Lenny HB

    Lenny HB Funster

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    If your ford has a CANbus system (I assume it has as you have DLR's) make sure you get ballasted LED's or fit separate ballast resistors, straight LED bulbs only draw a fraction of the current of standard bulbs an will upset the system & bulb failure lights will come on. Also make sure the bulbs are "E" marked, there are a lot of cheap LED bubs that are not and the light pattern is not very good from them. Buy a branded bulb like Osram or Phillips, the Phillips ballast resister is called a CANbus control unit.

    As Tony says check the bulb type PY is an Amber flasher bulb.
     
  4. albial

    albial Funster

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    Thanks Tony just double checked the manual and they are PY.
    Thanks also Lenny I will double check before going ahead. Thanks again
     
  5. rosalan

    rosalan Funster

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    Are you really short of power, so that your alternator needs L.E.D's? The habitation batteries can really benefit from L.E.D's as they are in use when the engine is not replacing their stored energy but driving lights are only in use when the alternator is running. There were some statistics bandied about when driving lights were first introduced and the extra fuel required for halogen lights over years was minimal.
     
  6. albial

    albial Funster

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    Hi Rosalan I read on a thread on here that on some of the hymers the headlamps have exploded. With the bulbs being halogen and getting hot this could be the problem. I am probably being a tad overcautious.
     
  7. DavidG58

    DavidG58 Funster

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    funnily enough I have just changed mine today, it is a standard 12V 21W bulb (I don't think it is halogen) same as reversing lamp.

    What horrified me was the charring of the bulb socket, being so bright and on all the time the whole fitting must get very hot, for that reason only I was going to try and source LED bulbs for our Mercedes chassis

    will watch here with interest :)(y) I have so far just done a like for like swap
     
  8. Lenny HB

    Lenny HB Funster

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    That was a mith Hella had a faulty batch of glass lens's only effectected the L/H lens.
    Now there is a good reason for changing, might check mine.
     
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