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328 speedo bulb upgrade

Discussion in 'Technical Q&A' started by dhs-9, May 20, 2004.

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  1. dhs-9

    dhs-9 Formula Junior

    Feb 6, 2004
    292
    #1 dhs-9, May 20, 2004
    I have read the thread on how to do the bulb change and it says that the bulbs are behind the panel. I would have thought the bulbs would have been pushed in from behind the speedo's back side where all the wires are to light up the speedo face. Can anyone tell me where the bulbs are photos if possible would be great.
     
  2. f355spider

    f355spider F1 World Champ
    Owner Rossa Subscribed

    May 29, 2001
    18,055
    USA
    #2 f355spider, May 20, 2004
    The bulbs ARE fitted behind each instrument (two in each). What are you not picturing?

    BTW, try bypassing the reostat first, quick and easy job, and is at least as effective as the bulb swap. Doing both is even better, but I have done a few cars now, and notice that the tach always ends up dimmer than the speedo. From what I can figure, the bulb specs are not equally brighter than than the stock ones....I would guess that one is 50% brighter, while the other is only 25% brighter....go figure, but the speedo and tach take different types of bulbs...
     
  3. Mike328

    Mike328 F1 Rookie

    Oct 19, 2002
    2,655
    Boulder, CO
    Full Name:
    Mike
    #3 Mike328, May 20, 2004
    Ahh, but I find the dimmer / rheostat on the 328 to be useful, and I think I could get enough brightness with the better bulbs. On the 308, I bypassed the rheostat and did the bulb upgrade, and then it was acceptable...
     

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