Hey guys, so I'm getting an auto lokka off a bloke who's upgrading to an air locker. Yeah yeah, I know, selectable lockers are the bee's knees but they're nowhere near my price range. I can get this auto lokka second hand for $100 so it's worth the gamble.

Any immediate things to look out for? What should I be getting/do I need for the install? Any way to test it before installing etc?

I know I can buy new for 400 or so, but single income family means it isn't gonna happen, so looking for help with above, thankyou.