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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jan 2017 Posts: 4 New Guy | | New Guy Joined: Jan 2017 Posts: 4 | Hello everyone! I am fixing up my 1950 3100 Stock gauge cluster. I would like to put a blue led light for high beam into the speedometer gauge and two green led lights for turn signal indicators in the other cluster. My question is how big or bright should the led lights be? I have found so many different styles and sizes. I kinda like the small ones with a chrome ring on them so they look old school, they are listed as 8mm but they don't give lumen out put. How bright or what brand have you members used or tried? Please let me know and thank you for your help! | | | | | Joined: Mar 2010 Posts: 10,270 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,270 | In my experience, LED lights are annoyingly bright to look at, so I would go as small/dim as you can find. In fact you may want to consider just drilling a tiny pinhole in the gauge and mount the actual LED bulb behind it. You can experiment with how bright it will be by mocking it up on a piece of sheet metal with various sized pinholes.
I have seen this done on an AD dash and the holes were very subtle and the lights were plenty bright.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | The 1-LED lamp might work? But, will it work with the rheostat (it says it is dimmable)? | | | | | Joined: Jan 2017 Posts: 4 New Guy | | New Guy Joined: Jan 2017 Posts: 4 | Thank you for the help, 52Carl I am going to try your suggestion. In the mean time just for the heck of it I ordered a few different bulbs from the web site tclederman linked too. I will let you both know what happens! | | |
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