Hey Guys!! I have an 88 F-150 XLT Lariat, and today it rained and i got in my truck and went to turn the wipers on and nothing happened, i know its not the motor or switch, i just replaced them.. all i hear is a sort of clicking sound from under the dash.. PLEASE HELP!!!!

 

The clicking under the dash is the relay, check your connections and fuses. It sounds like the relay is closing but power is not getting to the wiper motor. The relay itself could be bad. What happened to the original motor?
kenny

 

It could also be a short caused by rainwater, look for moisture when you check your connections.