I do the exact same Joe. Protecting my plug (Cover over socket on Tow)
I was camping with some friends about 4 yrs ago. He was "fiddling" with his signal/tail lights
on his trailer- not working. This was a Surveyor laminate 28'er. He'd had it a few years. I finally walked over and he said neither tail light
was working. In a nice way, I asked him about the plug. Finally, I said, "Let me try something and you watch". I went to the 7 pin, unplugged, plugged it back in rapidly a few times and WAH LAH!! It started working!
It was corroded HORRIBLY.
I suggested cleaning the terminals as best as possible THEN use some dielectric grease and coat them to protect them from corrosion again. He did and hasnt had an issue since.
I also keep my plug/socket coated with dieletric grease- and have since the trailer was bought new in the Spring of 2010. If the terminals are all working correctly, they will make contact when plugged in. I've used this concept (along with Joe's idea of protecting my plug from water getting in it while it's in storage) and never had one hook-up issue with my trailer. I periodically look at the blades/pin on the plug/socket and they still look brand new!
So, in my opinion, on a new trailer, keep the plug/socket lightly coated with dielectric grease to PROTECT it from corrosion. You're ALOT less likely to have problems with the grease rather than NOT using it and risking corrosion to which you WILL have a failure! This is not something I read about, but from experience on both sides.....
Originally Posted by Joe Romas
What also works is to lift the propane
cover up and droop the 7 pin cable around the tank retainer and put the cover back on.
This only will work if your cable is long enough, mine is.