I replace the alternator in my 2000 Altima afterwards the cooling fans want come on 2002 Nissan Altima

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
what would cause me to have no heat and cooling fans not come on
(2) Answers
Is it overheating? Low coolant now?
you have belt routing rite,,?? maybe popped fuse if u crossed or sparked wires somewere??