In Reply to: '49 8N "No Swimmin" (ignition don't like water; won't start) posted by Brad on July 15, 2020 at 22:29:48:
Depends on how water tight you desire to make it.
Gasket cap seals are nice, so is RTV. Problem with RTV is future removal.
Might not be advised. I also like silicon for plug wire connections, top and bottom, and usually a wipe around the tops of the boots where they enter the dist cap boots works also. Usually with that done a car wash is no longer an issue or any simple rain fall.