1994 Dodge Shadow rear turn signals, brake lights don't work

Electrical problem
1994 Dodge Shadow 4 cyl Front Wheel Drive Automatic
I don't have rear signals or brake lights and the tail light is very dim.
I've changed the flasher, checked all the fuses, replaced the turn signal cluster on the column.
I've checked the ground on the front fender and rear fender. I disconnected both grounds and still had dim head lights and the front turn signal was still on solid.
Still no rear signals or brakes. What am I missing? There is still another ground I guess, but where?