Ramcharger electrical troubles

Good evening folks! I need your brains again. My 87 ramcharger is mad at me for being parked outside while the Duster is taking its garage space...
I have a strange electrical gremlin . Yesterday morning on my way to work, my turn signals weren't working. The dash light would light, but not blink. I figured that a socket got wet and rusted out. (Happened before but I replaced sockets and lenses and fixed it) after work they worked. When i looked at them, I noticed all the lights were a little dim. I figured a wire got wet and was shorting or a bad ground in the turn circuit. Nope. Cleaned ground still the same. After work they were blinking again and i thought the sun dried the wet wire.
This morning I started the beast, checked signal and they were working. (Without headlights on) so i proceed to work. On my way, i noticed when i came to a stop, no blinkers. Let off brake, blinkers work. Check dimmer switch and still does it. I also noticed my wipers are really slow as well. Now when brake is pushed, any lights on the blinkers will not blink. Also when I push on the brake, the radio cuts out until I release the pedal.
Where else should I check? Headlight switch? TS switch? Replace dimmer? Another ground somewhere I am missing?
Sorry about being long winded, just trying to give as much information as possible.
Thanks!