hi all, ive been happily working on my new to me 78-fj40. with winter on its way i want to be ready with as much heat as possible as this will be my daily. i noticed the rear heater doesnt work, i checked the conection under the console. its plugged in, i assume that conection is the power and the unit itself is grounded as theres only one wire on the conection, i assume the motor is dead. what motor/fan can replace the motor or are they repairable in any way. thanx for any tips.