I finally got around to removing my rear wiper today because I'd already taken off the inside panel for another project. Turned out really nice, and the 1" plug fit perfectly. I think it cost me around 6 bucks for the plug (2 in a pack) and the silicone to stop the water.
No pictures because I think that everyone already knows what this looks like.

 

Yeah I did mine today but have a temporary plug in it until my 1fastmini one arrives.

 

https://www.northamericanmotoring.co...ght=rear+wiper

Heres a DIY

jack

 

Yeah my plug looks exactly like the 1fastmini plug. The only thing is that mine was a lot less expensive.