Thanks , I will check under the hood first, I also have to take the plastic panel apart because the liitle bulb that is in the heater knob has a broken electric socket and the wire got pulled thru the backside of this panel , so I will have to get behind thre also.

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