1999 Jeep GC Limited power problems

I hope someone can help me here!!! :runaround:
99 Jeep Grand Cherokee Limited The power window on the drivers side started acting up then a week or so later all the power windows stopped working along with the lock on the doors, the auto headlight switch, the information center no longer displays all the info and sometimes when I use the blinkers or the horn the dome lights will flash on....I have no clue where to start. A friend suggested a regulator in the drivers door or the main switch in the drivers door. Can anyone help? Please :).

Could be the regulator, the switches, or the wiring. I'd start by checking the wires where they exit the door and go to the body of the vehicle; it's a common place for wires to chafe.