All of the lights flicker when the engine is running. I cleaned the ground wire from the battery, but it didn't help. Any suggestions? We think it might just be a bad alternator.

When the engine is running faster, the lights flicker faster and it is less noticeable.





also, how can i put a picture in my signature?

 

Providing you have an original style alternator, you'll have a separate voltage regulator that's located on the radiator core support, drivers side. A bad regulator will make alternator output erratic like what you're experiencing. Output at the alternator should be in the 14v range.
Decent looking car.

 

Your code string is messed up in your signature. Try entering this instead:
[imag]http://i110.photobucket.com/albums/n88/scott14oh/Camaro3.jpg[/imag]
Change the word "imag" to "image" at the front and back of the code. If I put it that way, your picture would show instead of the code.
You'll need to downsize your picture too, it's a bit big now.

 

Ok, we will check on that.

its all original from 1969.. other than a paint job (same factory color) in 1976.

 

since it's all original, a common problem is that a lot of the time,the connector going into the regulator doesn't have a good connection. a lot of people just use a ziptie as insurance.