Help with wiper motor & switch

Alright, found my problem. The crank arm was not positioned correctly on the motor, basically the the slot was not lined up and it was slowly spinning on the motor. Now I've got that addressed and ordered some new clips.

My new question is, what is the best/easiest way to attach the arm back to the crank and get the clip on. ideally without ripping the entire dash apart. I have the glove box out so I have some access, but my arms needs to be about a foot longer. Was thinking i'd start with some super long needle nose pliers and see how it goes, just not just i'll have the dexterity to get it on.

any tips are appreciated.