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Thread: Instrument Cluster LED Conversion?

  
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    Question Instrument Cluster LED Conversion?

    Right, i have an 03 1.8 SRi and i'm fine with converting everything to blue LEDs apart from the instrument cluster (Speedo/Rev Counter etc). I can't seem to find a 'How To' or any info by search on my specific year to confirm.

    Anyone done this that can help? I.e. Are they normal LEDs or SMDs or what!?

    Cheers

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    lee gsi's Avatar
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    They are just normal bulbs in holders so you need to solder the blue led and resister into the holder

    they are called 'Plug and play'

    Here is a guide I did a while go: http://www.astraownersclub.com/vb/sh...highlight=plug
    The truth is always the truth even if you haven't realised it yet...

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    Are they 3mm LED's? I presume its 12v so that would make it a 390 ohm resistor.

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    Also - there aren't any filters in the speedo cluster i presume - so its just bulbs and go?

    More to the point - thanks for that too!

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    They are wide angle 5mm LED's
    The truth is always the truth even if you haven't realised it yet...

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    Just one question - ill obviously remove the batteries negative terminal before i do this but is there anything i need to know? Such as electric window resetting or alarm issues?

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    You dont need to remove the battery terminal.

    If the leds dont work when you fit them turn them 180 degrees in the dash as they only work one way round.
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    Quote Originally Posted by J50N_Astra View Post
    Are they 3mm LED's? I presume its 12v so that would make it a 390 ohm resistor.
    That would be an 11.1v loading with a blue LED. It would last a week at most if it didn't blow instantly.
    52 Astra G 1.8, 18" Mille Miglia alloys, 325mm Brembo 4 pot conversion, Coupe leather interior, Raid strut brace, Whiteline rear ARB, Irmscher bits (skirts, Carbon steering wheel, Bonnet extension, M3 mirrors, boot & roof spoiler), Reiger Rear Diffuser & Front Bumper, Koni Adj. dampers, 35/30 Vogtland springs, Duplex quad exit ASCAR stainless exhaust.

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    Most seem to work out about 470 Ohms but also remember the cars electrics can go up to 14.4v

    I normally use about a 1k resistor so they are not running at full brightness and last.
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    Quote Originally Posted by Oddjob View Post
    That would be an 11.1v loading with a blue LED. It would last a week at most if it didn't blow instantly.
    That was based on a supply of 12v, a voltage drop of 4.5v over the LED & a 20MA Current...

    I suppose at 14.4v 560 ohm would be right - basing that on the specifications of the LEDs i have!

    Ateotd, it all comes down to the LED's being used i spose.

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