Replaced the OEM headlights with new ones- but I found at some point the battery had leaked acid onto the plastic retaining straps for the headlight assembly and one of them had basically disintigrated.

Looking for the part number to replace it.

 

Item #14 on THIS DIAGRAM perhaps?

 

It was actually part #21. I ended up finding a pair of them at an auto parts store and replacing them. Thanks for the help though!