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Unread 09-22-2011, 03:24 PM   #1
sarfu
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1974 CJ5 
 
Join Date: Aug 2011
Location: Point Pleasant, NJ
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Very dim gauge lights???

Hi,

I have very dim gauge lights on my '74 CJ5, can't even read the gauges at night, how can I improve this situation??

Thanks

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Unread 09-22-2011, 03:30 PM   #2
Bakunin
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1985 CJ7 
 
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Improve your grounds, that's my first thought.
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Unread 09-22-2011, 07:17 PM   #3
shull360CJ7
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1998 TJ Wrangler 
 
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Quote:
Originally Posted by sarfu
Hi,

I have very dim gauge lights on my '74 CJ5, can't even read the gauges at night, how can I improve this situation??

Thanks
Have you turned the light knob (while the lights are on) clockwise and counter? Sounds simple but not sure if you tried that. Mine has a sweet spot where everything lights up nice, otherwise very dim.
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Unread 09-22-2011, 08:00 PM   #4
Shazam79
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1979 CJ5 
 
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Stupid question, but how do you check the ground? I had the same problem and changed out all my speedo cluster bulbs...but it seems only the top left illumination bulb is working. The other 2 may as well be burnt out. But all others are good and they dim as they should.

Also, any way to get rid of that blue hue or replace the 56 size with LEDs or something? Thanks.
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Unread 09-23-2011, 02:56 AM   #5
John Strenk
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1976 CJ5 
 
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Quote:
Originally Posted by Shazam79 View Post
Stupid question, but how do you check the ground? I had the same problem and changed out all my speedo cluster bulbs...but it seems only the top left illumination bulb is working. The other 2 may as well be burnt out. But all others are good and they dim as they should.

Also, any way to get rid of that blue hue or replace the 56 size with LEDs or something? Thanks.
It could be the voltage is to low possibly because the dimmer is not turned up all the way. They can get stuck.

The best way to check a ground is with a voltmeter. Connect one side to the (-) on the battery and touch the other lead to what you assume is ground on the dash. Turn on the lights. If you see any voltage then you have a bad ground. The higher the voltage, the worse it is.

You could also use a test light. Connect one side to the (+) on the battery and touch the probe onto your assumed ground connection on the dash. If it lights as brightly as going to the (-) side of the battery, the ground is good.


The speedo has blue covers over the bulbs and I guess you can always remove the covers. I have one speed with them broken off but the amber color is more distracting.

Yes the do make LED for the dash.

You have to get the correct bulbs also. Some bulbs are to long and will melt the plastic covers, some bulbs have the filaments to low to shine inside the speedo. Need to get the correct replacement bulbs for the dash to get the proper illumination.
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