Hey guys/girls. New to the forum, like what I'm seeing so far, hoping to get some help on my rig. I have a problem with my electrical on my 1999 TJ. My battery died the other day and I had to get a jump. Hooked it up correctly and it started right away. Immediately after the jump, I started having some wiring issues with my lights.

-First I noticed that when I turn my left turn signal on, both the left and right signals will go off.
-Second, when I hit the brakes, the instrument lights light up but only if the headlights are not on.
-Third, the brake lights seem to always be on when the headlights are on. When I press on the brake, no other 'brake' lights come on. (Brake lights work fine when the headlights are not on)

The right signal works fine and so does the headlights / running lights.

I checked and replaced the fusses under the glove box but no improvement. Checked the fusses in the engine bay, and all are working. I also checked the tail light bulbs and they seem to be fine. Disconnected the battery, cleaned the terminals but same problems. Disconnected the negative terminal for 30 mins, (maybe reboot computers?)

Nothing has worked and I need your help! Wondering if anyone can help me with this, or have any ideas about where to start to find the problem. THANKS!