So I am running the DSE wiper harness under the steering column so it looks somewhat factory. However I am trying to come up with a solution to retain the line clamp. Since the hardware isn't a machine thread there really isn't a nut available. In the end I should have just drilled out the holes and tapped them for an actual bolt and then I could just use a nut & washer in the engine bay.
Attempt #1 License plate nut. -- Fail
Attempt # 2 I forgot what these are called. -- Fail
They kinda work but not really
In the end I am just going to drill & tap the holes and do it the right way.