My Keyboard Beeps after cleaning?

I recently cleaned my keys since i had liquid spill, the computer worked so i cleaned the keys by popping them out individually and cleaning with alcohol wipes and once I got all the keys back together I took everything out of the front case (logic board, HDD, optical drive) and lifted the black covering up on the keyboard (because I thought soda leaked through) but did not lift where the backlighting cable entered. Since I did not know if the black cover held by adhesive (it was sticky I didn't know if the was the liquid damage a soda caused or not) I put the black covering back down and put everything back in. I turned the computer on and the backlighting worked but the keys dont exactly work, once you press a key the computer beeps and won't type the letter, I don't know what's going on since it all got cleaned.

If I need a new front case, then I will just get a keyboard w/backlighting off eBay for $50, and take the 50+ screws out of the keyboard attaching it to the front case, also how do I wire up the new keyboard and backlighting? Any help with replacing the actual keyboard would very appreciated.