jeep electrical problems HELP PLEASE

[haymaker2121]

I have a 1990 Jeep Grand Cherokee. I've been having electrical problems with it for a while and its been getting on my nerves. The power seems to be draining out of my battery whenever I have it started. The problem gets worse when I stop, the lights dim and it acts like it wants to die. I have replaced the alternator the starter wires and have a new battery. I need someone with some good knowlege or with some idea, something. I need help.

[baseball_playa1575]

Well you cant have a 1990 grand cherokee because the first year they made the grand was in 1993 so your first problem is not know what you are driving.