95 Jetta Blower Motor

My husband spent three days replacing the heater core in my 95 Jetta. He put everything back together and now there's no power to the blower motor. He's confirmed that the blower is good. He checked power to the switch that controls the blower motor and there's no power to the switch. Does anyone have any suggestions on what the problem could be? Thanks!

Check the fuses. He probably grounded something out when he had the dash apart. If the fuse is blown and the new fuse blows right away, pull the dash and find the pinched wire.