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I have a 1991 Explorer, The dash light and lights behind the heater controls are not working. Every thing else works, all the gauges the heater, single lights, even the blue high beam light works, everything works except I have no dash lights at night. I have checked all the fuses under the dash and they all are in good working order. I don't know what to check now???
Look in the upper left corner of the diagram. There is the headlight switch.
Power comes in on the r terminal.
It goes throught the dimmer control and comes out on the i terminal.
Follow the line coming out of the i terminal, and it goes down to fuse #13.
On the other side of the fuse the power comes out and goes over to the lamps via a lightblue/red wire.
I think I would turn the headlights on, and then pull fuse #13 and check for voltage on both sides. Put one side of your meter or testlight on a good ground, and then probe each of the fuse blades. With the lights on, and no voltage on either side of the fuse socket, that would point to the headlight switch being bad.
This was very helpful, Just what I needed. The blue/red wire had been tapped into a long time ago by someone else up near the dash cluster and was cut so that no power was going to the dash or heater controls. Thanks for the great info!!!!
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