back seat done

little force and to easy...
now my problem is the front seats... reading the haynes manual but it doesnt give the exact size of the bolt... im guessing around a 15mm, or a 5/8
i did try undoing the back part of the rails... but they are freakin locked, soooo tight... has anyone removed the front seats before??? if so can they give me some assistance...
also does anyone know if i can hook the digital climate control unit into my car to replace the knob one i have atm