Hi, i have a 97 nissan altima which has the blower only working on when you switch the **** to no.4, i have a replacment circuit available with me but i am not sure where and how to fit this.....could somebody help me with this....it would be a great help, because as of now i have to run either the heater or ac on the max.

thanks

 

your blower motor resistor is bad its usually under the dash on the passenger side, it should be visable.