The Stovebolt Site Forums The Shop Area The Electrical Bay generator light?

Hate to dredge up old posts, but this had SOME of what I was looking for. I'm defiantely doing some wire chasing and cleaning the contacts in my regulator tomorrow. But I'd like to see if anyone has someidea what's up with my beastie.
'56 GMC with a stock outfited 270ci L6.

I drove it to work t'other day. When I hopped in & turned the key I get the usual gen light, then I start it and it goes out, normal as can be.
However, as soon as I get to work and cut the ignition off, the light comes on. I turn the ignition on and it goes out, does same when I turn it off & then to acc. Start engine & it stays out, & comes on again as soon as I cut the engine. I already know this is a bad thing & is gonna eat my battery.
After work it got me home OK, have a powerful battery, but sure enough it drained it over the next day as it sat out front.
Thinkin I have a burnt contact in the regulator, but I'd like some expereinced opinion since I tend to avoid tinkering with voltage regulators when there are other options.