changing ceiling light bulbs

Discussion in 'Tech/Mech General' started by golly, Mar 25, 2014.

  1. golly

    golly Funster

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    Hi
    I looked at the ceiling lights in my Auto sleeper Surrey with a view to changing to LEDs expecting to find halogen bulbs, however the ceiling lights have mini fluorescent tubes (see photo). Doe's anyone know what wattage these are or has anyone managed to change these for LEDs.

    Thanks John
     

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  2. canopus

    canopus Funster Life Member

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  3. JeanLuc

    JeanLuc Funster

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  4. golly

    golly Funster

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  5. GJH

    GJH Funster Life Member

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    This was the recent thread. It contains details of how I converted our fittings in our previous van. They were definitely 12v.
     
  6. golly

    golly Funster

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    Yes, the van wiring goes to some sort of electronic wizardry :Eek!: I thought it was some sort of starter, but it would make sense if it were an inverter. If it was drawing a low wattage I would just leave them, but I cant find any marking on the tube.

    As you probably guessed I an electrical numpty :Doh:
     
  7. JeanLuc

    JeanLuc Funster

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    I realise the existing lights are on the 12V circuit, but the lamp is a 230V item. If the Autosleeper fitting is like those in my Hymer, there is an inverter circuit inside the lamp fitting that converts the 12V DC into 230V AC in order to power the tube. LEDs can, of course , be fitted by bypassing the inverter circuit and, possibly, reconfiguring the on/off switch if that is integrated with the present circuit.
     
  8. GJH

    GJH Funster Life Member

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    OK. I thought it was a starter as well but I'm happy to believe it was an inverter. I note that I referred to it as a "ballast" in my posting on the other thread so maybe I got the terminology completely wrong :Smile:

    However, conversion is by bypassing that circuit so that the wires from the LED holder go direct to the switch.

    Ken's advice to check with Aten Lighting is sound. I did so before I converted ours and bought the LEDs and holders from them.
     
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  9. golly

    golly Funster

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    Thanks Graham, the fitting you used looks as if it would fit, two connectors to the tube, but I am a bit hesitant as I thought it would just be a straight swap the same as the spot lights were. I have emailed Auto sleeper to see if they can advise.

    John
     
  10. TheBig1

    TheBig1 Funster Life Member

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    thinking I might write a "how to" thread with photos on how to convert a fluorescent light fitting to LED. yes i realise its relatively simple but lots of people are confused and worried about doing it

    would there be any interest?
     
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  11. golly

    golly Funster

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    That's a yes from me,:thumb: would be very useful.

    John
     
  12. GJH

    GJH Funster Life Member

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    Good idea. I wish I'd thought of taking photos when I converted ours as they make an explanation so much simpler than pure text.
     
  13. TheBig1

    TheBig1 Funster Life Member

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    will sort the bits and bobs out in the next couple of days then and hopefully get it done at the weekend:thumb:
     
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  14. Reallyretired

    Reallyretired Funster

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    Those fluorescent tubes are usually pretty efficient, so may be limited benefit from replacing them.
     
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  15. tonyidle

    tonyidle Funster

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    The tubes are normally approx. 8W so there are substantial benefits from changing to LED. Conversion is simple: remove everything inside the fitting except the switch. Connect your chosen LED module to 12V (via the switch) and earth. I used these:

    http://www.ebay.co.uk/itm/10x-48-LE...d=100011&prg=9063&rk=1&rkt=10&sd=261333030292

    Use 2 or 4 panels per light fitting depending on how bright you want them. They're available in warm white or brilliant white. Note the price is for ten panels. They have double-sided adhesive on the back.
     
  16. pappajohn

    pappajohn Funster Life Member

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    I replaced all 9 twin tube 11w (22w per light) fluorescents to 20w led strips by simply cutting the wires at the existing inverter board and connecting to the led strips.
    Didnt need to remove the existing inverter gear...just the tubes.

    Near as damn it 2 amps per original light with inverter losses reduced to less than 2 amps with all 9 lit.....a massive saving of 16ah
     
  17. tonyidle

    tonyidle Funster

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    That's just so untidy - and think of the effect on your payload of all those inverter boards ............. :Eeek::Rofl1::Rofl1:
     
  18. golly

    golly Funster

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    Had email back from auto-sleeper. Flurescent tubes are 8W. So my next question for the electrical wizards is - will the amps for each light be 8w divided by 12v = 0.6amps, even if the tubes are 230v tubes with the supply inverted up. if they are 0.6amps each its hardly worth changing. or have I got it totally wrong.


    John
     
  19. JeanLuc

    JeanLuc Funster

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    Correct - plus a bit for inverter circuit losses, so probably about 0.74 amps
     
  20. Taran_Las

    Taran_Las Funster

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    What's the consumption of these replacement panels?......I have looked but can't find any indication. Thanks.
     
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