whats involved in replacing the blower motor resistor on 2003 Dodge Ram Van 2500

my work van's heater & a/c only blows air with the fan on high. i bought a new blower motor resistor, i hope will fix the problem. so how do i change it? do i get to it under the hood or remove the center console?

1 answer
easy. under the hood by the blower motor on the passenger side.