HELP!!!! The actuating arm from the wiper motor to the wiper arms link pulled?? out of the hole by the right wiper blade end. While I can see the empty hole and the arm that joins the right and left wipers after taking out the radio, I can't see how the the arm joins the wiper pivot arms where they come through the firewall. The shop says that I have to take off the wiper blades and pivot nuts outside and push the whole assembly inside the car so they can re-weld the stud into the arm. My Wagoneer manual doesn't say anything about the actuating linkages.
The car has AC so I can't see up from below. Is there any other trick to do this?