Electrical issues please help

Alright I am new here and did a quick search but it yeilded no results. I have a 1998 Dodge Stratus it has about 120K miles.
Now to the fun stuff, for the longest time my car has had this electrical problem, which is when I turn on my headlights my windshield wipers turn on and the passenger side head light dims, the passenger turn signal is at a higher speed, and the horn doesn't work. I have replaced the BCM, re-sealed the headlights cause I noticed some moisture in them, replaced the multi funcion switch, and scanned over the wiring entering the cabin from the engine bay. I can't think of anything else to look for. When the headlights are off the horn works fine and the windshield wipers operate normal and the turn signals do to.
With just the parking lights on if I honk the horn the windshield wipers turn on. But the turn signals operate at the usual speed.
With the passenger side headlight bulb removed and the car turned on the windshield wipers turn on even without the headlights/parking lights on.
I have been told it could be the ECU or a bad ground, or possibly a relay.
This happens intermittently, but as of late it has been constant. Please help me out I am at my wits end