I was having problems with my charging system, and thanks to advice from some people in Tech Help, I'm pretty sure that problem was solved with the replacement of my voltage regulator. But since the new one has been put in, the battery light comes on when the car is off (not when it's on) and the glow pug light doesn't come on ever. The car has trouble starting up unless I push on the gas, but it starts no problem after it's been driving, stopped, and started again. I have no idea where to look for the glow plugs, or what exactly I'd be looking for. Another thing... the battery was connected backwards yesterday (pos on neg) before the v.r. change. That may have something to do with it, but everything else works fine. I'm in the process of doing a search for glow plugs, but any advice would be greatly appreciated. And, besides really wanting to know and understand how my car works, I can't afford a mechanic right now.

It's an 84 190D.