Thanks for the reply's. No the lights do not dim at all when turning the key and all the lights and radio and everything works just fine. I just got the truck so I can't say for sure but the battery looks brand new I guess spraying some WD40 on it wouldn't hurt but there is no corrosion or anything. One problem may be that it has one of those cheap replacement posts on the negative cable. It seems like it is stable and getting a good connection but who knows. The grounds seem ok as well but I am not sure where the ground that runs directly to the engine block is, does anyone know?