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No Power to Heater Blower

17K views 11 replies 4 participants last post by  mph1920  
... next I ... checked for power into the blower switch.. nothing....
Mark, the Blower Switch chooses the ground path for the blower motor through the differing resistors. We actually need to be looking at the "Function Selector Switch" for power availability, coming from the fuse.

If your truck has A/C, then lets look for power on circuit 181, the Brown Orange wire, shown above.

If your truck has no A/C, then lets look for power on circuit 181, the Orange wire, shown below.

If you have no power on these wires going to your Function Selector Switch, then we need to backtrack to the Fuse Block, and look at Fuse #9.
 

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... BUT WAIT THERE'S MORE!
As long as we're on electrical problems... I had some trouble with my fuel pumps (2)....
Mark, as you can see, we are here to help, and you are in capable hands.

However, I would ask you to start a new thread pertaining to the fuel pumps and gauge issues. This will help others down the line find the answers that they need.

Thank You for the kind words.