Blower only works on 2 speeds

I changed the blower motor on my 99 Trooper back in the summer, Now it only works on 2 speeds. This is an OEM blower. Anybody got any ideas?

probably the the resistor pack, that black thing screwed into the AC evaporator housing. it's what modulates the voltage to modulate the speeds.

//bc

probably the the resistor pack, that black thing screwed into the AC evaporator housing. it's what modulates the voltage to modulate the speeds.

//bc

+1 on that