dash light problem
Thread Starter
Navigator
Joined: Mar 2013
Posts: 9
Likes: 0
dash light problem
Have a 87 base model, when I turn on the head lights the dash lights go out could turn **** and they would turn on but that's not working now? Any Idea's would be great and thanks to the folks here that helped me figure out the problems I had before. my first vette love it but a lot more issues then I anticipated.
Safety Car
Joined: Aug 2009
Posts: 3,752
Likes: 276
From: Melbourne, Victoria, Australia
Have a 87 base model, when I turn on the head lights the dash lights go out could turn **** and they would turn on but that's not working now? Any Idea's would be great and thanks to the folks here that helped me figure out the problems I had before. my first vette love it but a lot more issues then I anticipated.
check the following website out, look down the page and there is lots of information.
http://www.batee.com/
Do your instrument light come on during the day? when you shine a flashlight beam at the small hole on the left above the speed display bar graph? there is a photocell sensor that brightens the dash to suit the light conditions.
At night the lights can be adjusted via the light switch, mine is almost always fully anticlockwise as i like a bright instrument cluster. Once set to your taste you do not need to adjust the brightness again.
There are 4 light globes (special halogen globes) i recommend you upgrade to the xenon type as they do not run as hot, the later c4 had them as standard.
http://www.ebay.com/itm/84-89-CORVETTE-DASH-INSTRUMENT-CLUSTER-LAMPS-BULBS-XENON-Replaces-882-halogen-/281217367302?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3ACorvette&hash=item4179dc7d06&vxp=mtr
So you have to determine if the lights work have they blown or is the headlight switch faulty(for night time) and is the photocell working for daytime brightness adjustment.
Last edited by gerardvg; Apr 10, 2014 at 02:26 AM.
Thread Starter
Navigator
Joined: Mar 2013
Posts: 9
Likes: 0
dash lightslight
Lights work during day.If turn **** to right they would come on at night, now if I do that they don't come on and the lights to radio and heater turn off I haven't used a flash light in the censor but I'll try it.its that little square at top right of dash?
Safety Car
Joined: Aug 2009
Posts: 3,752
Likes: 276
From: Melbourne, Victoria, Australia
Have checked my shop manual, the headlight switch sends power to the fuse block (inst fuse 3 amp) from there a grey wire goes to the instrument cluster. The instrument cluster uses the photocell to adjust brightness daytime only and at night via the headlight switch variable resistance.
So check your fuses but it will make day or night dark if that instrument fuse has blown.
Am 99 percent sure the headlight switch is bad.
so either the fuse has blown or the headlight switch resistance dial is bad and you need to replace the headlight switch.
Good luck
