Hi,

I think you need to be more detailed or explicit on which lights are lighting up?
An example would be:
Is there any order to it to them coming on.

Is there any condition or event happening when this happens?
If the engine tries to stall for, it is normal for all the lights to come on.

Do they flash on or off, as like in winking at you?
Are any dimly lit up and change back and forth while on?

A big one here!
Has the cluster been worked on by any previous owner?
Like a new radio or burglary alarm?


A broken 25 tooth gear is a very common issue with ALL the electronic speedometers from around 1985-6 years. The material that the gear is made of ages and becomes soft until it breaks off the teeth.

Hope this help you get a better response!

Phil
They fall out and disperse themselves inside the speedometer head.
If and when you replace that gear make sure you inspect every TOOTH IN ITS HEAD!