Simple dust cover for Australian / New Zealand flat 7 pin trailer plug. Limits dust & moisture getting on the pins, however I also added some dielectric grease in the holes to prevent corrosion also.
Remixed from https://www.thingiverse.com/thing:4804261 which despite the model preview not really showing it, has a loop on the cover to use small chain/wire/string to attach to suitable place on caravan or trailer draw bar. The reimx has added some width to this design to allow for the Narva brand connector which is not flat on the outer case edges, so this design will fit Narva and generic trailer plug designs.
The author remixed this model.