You could burn out any diodes in the electrical system.
You probably fried all the electronics. Take it to a trusted mechanic to diagnose it.
I would start by checking the alternator yourself or take it and have it checked. If you had'nt had any battery issuses like hooking battery up wrong It is prob. your alternator.
There could be a sensor wire that is bad or going bad
I would check your alternator*(check the spelling).
There is the possibility the battery could blowup. You can damage the complete electrical system.
Faulty Alternator?
Probably a dead battery.
Recheck your battery to see if hooked up right.
It could be a dead battery.
your alternator ain't charging your battery or a bad connection draining the battery
Have your alternator checked. That's what charges the battery.
check your battery cables. could be old or just loose.