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VW MKIII-A3/B4 TDIs This is a discussion about MKIII-A3/MkIII Jetta/Golf (<99.5) and B4 Passats (96,97) TDI's. Non TDI related postings will be moved or removed.

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Old January 25th, 2007, 10:33   #16
PharoahTDI
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Sorry I stated my question wrong. I have taken them out but what bulbs to I need to replace them with? Is the one you used from RS the same?
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Old January 25th, 2007, 11:18   #17
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Well, I don't have a radio in front of me, but the ones in the bayonets are just a plug in bulb I believe. The ones for the LCD backlight are soldered in, so they would be different. I think my local NAPA guy carries those.
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Old June 9th, 2007, 18:15   #18
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Can different color bulbs be substituted? I would like to go blue
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Old June 9th, 2007, 18:42   #19
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The bulbs slide into a little silicone jacket that is green, that is what gives it the color. I guess if you could find them in blue you could get blue lights. Good luck with that one though.
Ray
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Old June 15th, 2007, 08:37   #20
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Anyone ever had the "copper pad" that the bulbs attach to disappear when removing the old ones? The left bulb went on great but the copper area the right bulb attaches to seems to have vaporized or melted away. I guess there is no way to fix this other than repalcing the board? Any idea what went wrong and ways to prevent it next time? Anyone have a spare board for a tape deck unit? Thanks!
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Old June 15th, 2007, 16:10   #21
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I have one spare light board with new bulbs installed. If you will send me a PM with your email I will send a picture of it to you in the AM.
Ray
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Old June 11th, 2008, 11:54   #22
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Does anybody have a source for those bulbs with the twist-on bayonet sockets? Who makes the radio, anyway?

Thanks!
Michael
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Old June 11th, 2008, 20:23   #23
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Matsush!ta/Panasonic made the radios.
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Old June 21st, 2009, 21:46   #24
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im with mike. i wanna find the bulbs, but blue
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Old November 28th, 2009, 16:22   #25
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Will this fix the screen on the radio or is it only for the buttons?
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Old December 25th, 2009, 05:19   #26
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The two bulbs singled out in this how-to are the two for the digital display.
All the others, those mounted vertically, are for button illumination.

I finally got around to replacing the bulbs on the radio mentioned in post #13. Really easy with instructions. Thirty minutes is about right.
I replaced them with a pair of the smaller bulbs used for button illumination as I personally feel the display is too bright for night use.
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Old January 4th, 2010, 18:02   #27
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Gotta get around to doing this as the right side is dark, but surely will do the other while it's apart.
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Old January 6th, 2010, 18:14   #28
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Quote:
Originally Posted by Lug_Nut
I replaced them with a pair of the smaller bulbs used for button illumination as I personally feel the display is too bright for night use.
The lower intensity bulbs are nearly perfect for me....at night.
Twilight and dusk could use just a touch more illumination, but otherwise, it's 'more better' than it was with the full-bright lamps.
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Old July 30th, 2011, 20:17   #29
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Quote:
Originally Posted by Ray_G View Post
The bulbs slide into a little silicone jacket that is green, that is what gives it the color. I guess if you could find them in blue you could get blue lights. Good luck with that one though.
Ray

If you've ever taken apart a MK1 or mK2 CE1/CE2 gauge cluster, the High Beam indicator light uses a blue cap that can be swapped in place. But I found it doesn't work well unless you can match the rest of the lights. The other option would be to swap in LEDs, but you'd either have to wire in a voltage regulator and some resistors to pull the voltage down to 3v or get some appropriate 12v LEDs with inline resistors wired in. (I actually can't remember what the voltage was at the bulbs.)

I'm going to be pulling mine out tonight and will throw it on my power supply/work bench.

Last edited by keebler64; July 30th, 2011 at 21:14.
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Old July 30th, 2011, 23:53   #30
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Well, just measured it and it's 9vdc. I'm all out of the incandescent bulbs, so I'm going to try to pop in some 3.3vdc green leds (only others I have are super white). I'll post the result.

That being said, if you wanted to change them all to LEDs you can, something cooler would be to wire in RGB leds hooked up to a separate MCU controlling the colors via PWM. But realistically, its extremely impractical and wouldn't match the rest of your interior. (that is unless you wired every light in the car to the same MCU. Also possible, but time consuming/insane.)

Also, if you were so inclined and you REALLY wanted a blue/red/whatever color. You can take apart the LCD assembly and replace the white diffuser screen with the color of your choosing/color it with a sharpie.
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