I have a 2001 ford f150 4.2 five speed with a little over 250,000 miles. The wipers will not do anything. I have gotten a new motor and plugged it in before I installed it and checked it and still nothing. I have changed the switch on the column and they still did not work. I have tried checking with a multimeter and a probe light. I do not know what is wrong with them or where else to go. Does anyone have any idea what to do or what to check next?

 

i've had the same problem with mine also, seems the GEM module controls or circiuts travel thru it, just another option for ya. its the box above the fuse block under the dash.

 

That's the conclusion I have come to also. I will be changing mine out as soon as I get the time.