@tlfowles, Your pic shows: 1- the glycol system drain tube, which is the one with the (brass?) plug in it. 2- Two freshwater drain tubes 3- And the large one you're asking about. If you look ins… (View Post)
Here's a little tip for those who don't wish to carry numbers of big thick keys in their pocket.... You can grind the plastic off the RVLock key, and there's a tiny key with a hole und… (View Post)