RX7 NOOB

Alright here's my 93 rx7 electrical problem's symptoms. Car starts and idles fine, and blinkers work fine to. But when I turn on the parking lights I get no light and the dash dims to barely anything. When I turn it to headlights they pop up but again no light.

I checked all the fuses and the +/- connections to the battery are good. I'm guessin it's a bad ground or short circuit, but I have no Idea where those are.

I tried searching but it's not working for me at all. If someone can help, or find me some links I would be very grateful.