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Hello and thank you for your question,Have you scanned the computer system to see if there are any fault codes setting for the speedometer?
The wipers not working should have no affect on the speedometer so I would scan the system and see if there are any fault codes setting which there should be if the speedometer is not working. As for the wipers there are two fuse you need to double check and that is the #33 fuse in the interior fuse panel as well as the #106 fuse located in the under hood fuse panel. If both fuses check okay then you are going to need to do some testing before you consider replacing any parts. I have enclosed the wiper test steps in the link below as well as the wiring diagram for reference. Have a look and post back if you need help or have more questions.https://dl.dropboxusercontent.com/u/104923897/Wiper%20wiring%20Jul%2029.pdfhttps://dl.dropboxusercontent.com/u/104923897/Wiper%20Testing%20JUl%2029.pdf
There is a relay and its built into the wiper motor and not service separate. Take a look at the wiring diagram.
You may want to have a look at the connector on the back side of the multi-function switch as well There are some known issues with wiring coming out if the connectors due to the harness being stretched to tight when using the tilt. If that checks okay then run through the steps I sent you and you should be able to determine if its the motor or the switch.
I would agree, its one or the other and the test steps should allow you to determine which it is. With out being there to do the testing I sounds like it may be the motor but with out doing the testing that a guess on my part.
I have no access to your information or any control over anything you have been charged nor would I want it. Im just trying to help you and am paid nothing with out a rating from you. I have provided you with the test steps as well as the wiring diagram and if you choose to not pay me then its still your to keep. I do not work for Justanswer, Im a contractor for them.
Im not sure how that would happen as well but you can contact customer support and they will help you with this.