I started with the standard 16 amp that blew with ac blower on, about every couple of days . Then I went up to 24 amp , and it blew after a couple of days. Then I tried one more time and then after coming out of the store I turned the car on and the blower did not come on. I opened the hood, the 24 amp fuse did not blow but , so now what ? I took the two prong black plug of the blower motor and ran jumper wire directley to it and it would run . So I know blower motor it self is okay , Now I am thinking the switch is bad, I know the switch and blower were both replaced not long ago.There is this xtra resistor in or around the blower motor right. I will take the motor out and see what I can find. I think that the 24 amp fuse might have blown the resistor? I dont know what else to check. Hans

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A couple of Ford pickups F 150,250, 350 missed.
1983 240 D 256,000 miles ,auto, ac.