Better illumination of gauge cluster possible?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Andreas Wickman

Full Access Member
Joined
Dec 19, 2018
Posts
51
Reaction score
45
Location
Sweden
First Name
Andreas
Truck Year
1983
Truck Model
C20
Engine Size
379
The illumination of mine gauges are very poor (C20 1983). Does anyone know if it is stronger bulbs for gauge cluster available? Any LED option?
Best regards from a cold Sweden.
 

Scott91370

Full Access Member
Joined
Apr 2, 2018
Posts
997
Reaction score
1,019
Location
Burleson, Tx
First Name
Scott
Truck Year
1985
Truck Model
Sierra1500
Engine Size
350
LED will work but may not be dimmable (have to get the right kind for this). If they do not come one they're installed 180 degrees out - they are polarity dependant.
 

TotalyHucked

Full Access Member
Joined
Feb 24, 2020
Posts
3,671
Reaction score
11,861
Location
Auburn, Georgia
First Name
Zach
Truck Year
1985
Truck Model
Sierra 1500
Engine Size
5.3
Another trick is to pull the gauges completely apart and paint the housing (the yellowish plastic piece) with some chrome paint. That with LEDs seems to work very well. I have a buddy that did this in his '73 and loves it
 

fast 99

Full Access Member
Joined
Dec 31, 2021
Posts
2,029
Reaction score
2,937
Location
Spokane, Washington
First Name
Brian
Truck Year
81,85
Truck Model
K20
Engine Size
350
Tried LED in a cluster, very disappointed. Didn't use chrome paint that is a good idea.
 

GTX63

Full Access Member
Joined
Nov 27, 2022
Posts
933
Reaction score
3,791
Location
Tennessee
First Name
Ty
Truck Year
1985
Truck Model
K10
Engine Size
350
I bought some leds off ebay or amazon. I bought multiple packs for each truck as I start tearing into dashes.
Most of them do not dim, so there is that. All of the ones I have used "Superbrite" might be the brand, have worked well.
The factory lights are akin to holding a bic lighter next to the gauge, and they were like that when new too.
 

HotWheelsBurban

Full Access Member
Joined
Mar 31, 2023
Posts
2,402
Reaction score
5,660
Location
Houston, Texas
First Name
Carol
Truck Year
1990
Truck Model
R2500 Suburban
Engine Size
350
Change the bulbs out to 168’s they are a watts or 2 brighter than the originals
Yes. #194 bulbs are stock, they're 2 candlepower. #168 is 3 candlepower so half again as bright. Also a good upgrade for the side markers and license lights. Don't get #161 as they are only 1 candlepower.
 

75gmck25

Full Access Member
Joined
Oct 13, 2016
Posts
2,266
Reaction score
2,210
Location
Northern Virginia
First Name
Bruce
Truck Year
1975
Truck Model
K25 Camper Special TH350 NP203
Engine Size
5.7
I wasn’t sure the #168 bulbs would help that much.

I decided to repaint the metal back of the cluster white, and then ordered new dimmable led bulbs from an online store (Super-bright LEDs, IIRC). They are dimmable, but not exactly like an incandescent. They dim to about 1/2 brightness, and then suddenly go nearly completely off. However, overall it works really well.

I also bought a red led for the brake warning light, and green leds for the turn signals indicators.
 

Craig Nedrow

NADAR UNDER THE RADAR
Supporting Member
Joined
Sep 1, 2018
Posts
1,036
Reaction score
2,184
Location
Washington State
First Name
Craig
Truck Year
1973 (have two), 1985
Truck Model
K10, K20, C20
Engine Size
350, 454, 6.2 Detroit
These are dimmable, excellent
 

Attachments

  • IMG_4652~photo.JPG
    IMG_4652~photo.JPG
    132.6 KB · Views: 68

Bullet Bob

Full Access Member
Joined
Nov 16, 2018
Posts
107
Reaction score
180
Location
Louisiana
First Name
Robert
Truck Year
1980
Truck Model
C20
Engine Size
454
These are dimmable, excellent
Any chance you have a picture at night time on full brightness. I’ve been debating swapping and may order these if they will dim
 

ChuckN

Full Access Member
Joined
Nov 8, 2022
Posts
1,317
Reaction score
4,001
Location
Bellinham, WA
First Name
Chad
Truck Year
1981
Truck Model
C10
Engine Size
350
Yes. #194 bulbs are stock, they're 2 candlepower. #168 is 3 candlepower so half again as bright. Also a good upgrade for the side markers and license lights. Don't get #161 as they are only 1 candlepower.
I used 194 bulbs because it was the only thing in stock at the time. When I take the dash apart I’m definitely going 168, they’re just too dim.
 

HotWheelsBurban

Full Access Member
Joined
Mar 31, 2023
Posts
2,402
Reaction score
5,660
Location
Houston, Texas
First Name
Carol
Truck Year
1990
Truck Model
R2500 Suburban
Engine Size
350
I used 194 bulbs because it was the only thing in stock at the time. When I take the dash apart I’m definitely going 168, they’re just too dim.
Lot of stores don't have the 168 any more. We always had them, but that was because they used them more back in the day. Dad also carried many items that he used; I remember him explaining to customers about the brightness difference on the gauge clusters and backup lights/license lights.
 

Craig Nedrow

NADAR UNDER THE RADAR
Supporting Member
Joined
Sep 1, 2018
Posts
1,036
Reaction score
2,184
Location
Washington State
First Name
Craig
Truck Year
1973 (have two), 1985
Truck Model
K10, K20, C20
Engine Size
350, 454, 6.2 Detroit
Any chance you have a picture at night time on full brightness. I’ve been debating swapping and may order these if they will dim
I will take a pic tonight and post it to you, but they are BRIGHT, I really like they, and they dim well
 

Forum statistics

Threads
44,167
Posts
950,737
Members
36,282
Latest member
Doug Hampton
Top