Cluster question
Thread Starter
Le Mans Master
Joined: Dec 2006
Posts: 5,154
Likes: 2
From: Ft Myers Florida
Cluster question
Got this 90 where the LCD comes on when you turn the key on but then turns off with no backlight, it will turn on when you shine a light in the sensor. I change all 5 lights behind the lcd still nothing. Any ideas?
Thanks
Thanks
Safety Car
Joined: Oct 2008
Posts: 4,689
Likes: 4
From: Yucaipa CA
Thread Starter
Le Mans Master
Joined: Dec 2006
Posts: 5,154
Likes: 2
From: Ft Myers Florida
Le Mans Master
Joined: Oct 2007
Posts: 9,681
Likes: 3,432
From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
When my car had the factory cluster I always drove with the parking lights on. The backlight was always on then too, so I didn't notice it being dim. You could do the same if you want it lit.
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
You likely have cluster dimming circuit problems. Normal operation is to have bright backlighting in bright cockpit lighting and dimming with decreasing cockpit illumination. Also, try rotating the headlight control, it too sets the backlighting and if it doesn't, then you may have a defective control or a blown TAIL fuse. Check the fuse with an ohmeter, they have better eyes than you do.
