Alternator woes

[baking]

Generator light comes on at idle, but goes away or dims as engine speed increases. I have replaced the belt, had the alternator repaired, but still have the problem. I did a search on similar problems and found there is a ground by the brake pedal that sometimes gets cruddy or disconnected. Since this happened right after I installed a tilt column, I wonder if maybe that's my problem. Is this the ground that was mentioned?
http://home.insightbb.com/~baking/ratsnest.jpg
I've got it circled but it's still hard to see. Should I take it back to the alternator shop?
TIA,
baking

[462CID]

What year and model is this car?

I don't know about that ground- the wiper ground is right in there, too. it all looks very familiar but without my head upside down in the car it's very disorienting to me- but that looks like the main ground in my dash ('70 Skylark)

here's a thread from a similar problem, if the ground isn't the trouble:

http://www.v8buick.com/showthread.php?s=&threadid=2378&highlight=generator+light

[baking]

Oops!! 1970 Skylark.
My light varies in intensity with engine speed. It goes out when I get up to 40mph or so and shines brightly at idle. Kind of like a slipping belt, but it was replaced when I was screwing around with the cooling problem.
:(

[Loyd]

The alternator light in the dash is controlled by the voltage regulator on the firewall. Have you replaced the regulator or had it tested.