Why am I not having any power inside the car

My brother just recently replaced the ignition in my
car it is now having issues no windows no radio no
instrument gauge cluster no inside lights the
cigarette lighter basically all power on the inside of
the car is gone I even have to press the bypass
button by the shifter to get it to go into gear from
Park while it's running could the ignition that was
replaced have been wired wrong when put in
everything worked before