Trailer wiring connector maintenance

[Belmont Resident]

Originally Posted by SIKSUKR

I bought my last tube of dielectric grease at Home Depot.Most auto parts stores carry it.Didn't know about the spray so not sure if they have that.Wd40 has similar properties in that it lubricates and prevents rust and displaces moisture.I've used it on electrical connections of other types for years.

Water Displacement, 40 the number of times it took to perfect the formula.
To the best of my knowledge WD40 has no lubricating properties what so ever.
At least that is what I was told by a supplier way back when, when I was looking for a lubricant to break rusted bolts free.
It does leave a film but is made to displace water on whatever surface it is sprayed on.