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Unread 01-24-2013, 11:58 AM   #1
Cutlass327
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Replacement gauges with proper light coloring?

Looks like I'll need a new oil gauge, the glass cracked and it is driving me nuts. I also want to fix the fact that my volt gauge is more yellow than the color it is supposed to be - looks like it is not an original gauge, it uses a different single wire light socket like an aftermarket gauge trio uses when compared to the oil gauge. I would love to find quality LED replacements and have them the proper color (Which is?? I am red/green colorblind) which I know this would solve the off-color issue, too.

Anyone find exact fit and color replacements?

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Unread 01-28-2013, 02:07 AM   #2
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Nobody?
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1978 CJ5 258/T177/D300, '86 D30/D44 WT axles, 'glass tub windshield frame, and fenders, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy

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Unread 01-28-2013, 03:01 AM   #3
John Strenk
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Got me, I don't know.
We just bought a spectrophotometer here at work, maybe I can measure the wavelength.
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Unread 01-28-2013, 03:08 AM   #4
86cj74.2L
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Quote:
Originally Posted by John Strenk
Got me, I don't know.
We just bought a spectrophotometer here at work, maybe I can measure the wavelength.
Anything to play. Where I use to work it was always Christmas.

This is the mechanical oil pressure gauge in the 86.

The box said lighted. But it's not...........
image-1885832398.jpg  
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Unread 01-28-2013, 04:04 AM   #5
stgil
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Quote:
Originally Posted by John Strenk View Post
Got me, I don't know.
We just bought a spectrophotometer here at work, maybe I can measure the wavelength.
The OEM filament lights bulb gauge are not LASER... It'snt ONE wavelength... it is many...
Spetrophotometer will give you many and many wavelength... a spectrum of wavelength... hard(impossible) to find a perfect LED replacement bulb with this.
WHITE LED bulb has a "tight" spectrum (usually with UV too) than Filament Bulb ...

The best way is to buy RGB LED and fit the right spectrum... but...I don't think you find a RGB LED smaller enought for the oem brackets and it needs a controller...

Regards,

Gilles
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Unread 01-28-2013, 04:04 AM   #6
stgil
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Quote:
Originally Posted by John Strenk View Post
Got me, I don't know.
We just bought a spectrophotometer here at work, maybe I can measure the wavelength.
The OEM filament lights bulb gauge are not LASER... It'snt ONE wavelength... it is many...
Spetrophotometer will give you many and many wavelength... hard to find a perfect LED replacement bulb with this.
WHITE LED bulb has a "tight" spectrum (usually with UV too) than Filament Bulb...

The best way is to buy RGB LED and fit with his controller the right spectrum with it ... but...I don't think you find a RGB LED smaller enought to fit in the OEM brackets and it needs a controller...

Regards,

Gilles
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Unread 01-28-2013, 04:45 AM   #7
stgil
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Here is a RGB LED with controller:

HERE

You can replace controller with the RIGHT amount of resistors and a (3 may be) voltage regulator ...

Regards,

Gilles
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Unread 01-28-2013, 05:54 AM   #8
John Strenk
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On the OEM gauges, they usually have a filter over the light.

anyways our Spetrophotometer will give us a graph of the relative intensity of all the wavelengths from IR to UV and everything inbetween.


Something like this: This is for an incandescent light bulb




White LEDs look more like this:



An RGB LED would be interesting..
I'd just cut out the filter and put it in the new gauge. There is always Nail polish....
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Unread 01-28-2013, 06:13 AM   #9
stgil
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Quote:
Originally Posted by John Strenk View Post
On the OEM gauges, they usually have a filter over the light.

anyways our Spetrophotometer will give us a graph of the relative intensity of all the wavelengths from IR to UV and everything inbetween.


Something like this: This is for an incandescent light bulb




White LEDs look more like this:



An RGB LED would be interesting..
I'd just cut out the filter and put it in the new gauge. There is always Nail polish....
Nice result John!

That confirms,that WHITE LED has more UV than incandescent lights bulbs, and heated not a lot: 3 times less IR than bulbs with filaments

Regards,

Gilles
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Unread 01-28-2013, 06:51 AM   #10
Matt1981CJ7
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Cutlass,

The factory dash light color is a light green on my '81.

The only OEM-style aftermarket gauge I've bought was a Crown tach. It has a non-colored light, which kinda irritates me since it doesn't match the rest of the dash.

Good luck,

Matt
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Unread 01-28-2013, 07:43 AM   #11
timgr
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Re the S-W gauge, they may call it lighted, but I recall you'll need to buy the lighting kit. IIRC the Jeep factory lighting will pop in to the S-W gauges, so that's a point in their favor. However, the Autometer gauges have a red needle, and look more like the original gauges. But you'll have to splice in their lighting to the existing harness - and they do not ground through the gauge shell, so you'll need to route a ground wire too.

You could try super-bright LEDs http://www.superbrightleds.com/ for a colored replacement bulb. That will give you some control of the bulb color. You can always adjust the intensity of LEDs down by adding a resistor in series - that would be another way to try and make the gauge lighting match.
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Unread 01-28-2013, 08:08 AM   #12
Pathkiller
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Autometer Traditional Chrome and Z-series come with both red and green bulb covers. The green appears to be very close to the original gauge color to my non-spectrophotometer calibrated eye.
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Unread 01-28-2013, 08:31 AM   #13
BlkCJ7Laredo
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I know this may sound tedious but here's my take..

The original Volt and Oil Pressure gauges were made by Faria Instruments.

Get yourself a set of old dead OEM gauges then get new Faria replacements, take bezels off and transfer the Jeep propietary faces to the new gauge, paint the needles flourescent orange and voila new gauges as good or better than original.

https://faria-instruments.com/store/index_standard.php

Or keep the search on and find NOS gauges like I did.

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Unread 01-28-2013, 09:03 AM   #14
Matt1981CJ7
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Blk,

Thanks for that info.

Do you happen to know who made the original CJ tach and clock, and can a guy do the same to those?

Matt
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Unread 01-28-2013, 09:07 AM   #15
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Faria Instruments made the original tach. I don't believe they make that style gauge anymore however by the looks of the website that I provided the link above. Borg Instruments made the clocks. Here's a link to the current company information. I don't know if they'd be able to help you or not:

http://www.indak.com/company_profile/borg_indak.htm
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