Heater blower not working
1992 Ranger, 2.3 No A/C- Blower was fine this am. but not when I got off work. Fuses all check good. Haynes manual is not much good on the wiring diagram. Two wires go the the blower motor, one is hot, the other shows neither hot or ground. I would think one would be ground. I checked only for hot wire at the blower motor resistor and showed no power on any of these. Tomorrow, I will run a temp wire to the blower and see if it runs, till then, any ideas where to check and which wires should be hot or ground at the resistor and the blower?