Nighthawk87

Is there any lubricant that can be used. I feel like I have to wiggle it a lot to get it in.


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Dirttracker18

Dielectric grease, always have a cover on the truck side, especially after dielectric grease use.

Also clean the inside of the plug on the truck and around the plug on the trailer. They fit tight so that it does not just fall out when you hit bumps on the road.

Gx2Lariat

...oh man, this one is just too easy. Steve Carrell would have a field day with this one. lol

Nighthawk87

I figured it wouldn't take long to turn this one around

Nighthawk87

I thought so. Maybe I'll live it just a little.

11screw50

Hit the gym?

As for keeping the plug connected, isn't there a catch on the flap that catches a jog on the plug to keep it from backing out?

Dirttracker18

Round 7 pin, yes

Flat 4 pin, no

PerryB

You guys are a terrible bunch of degenerates and should be ashamed of yourselves. Also, I'm upset because you all beat me to the best wise cracks!
As to the original question. If the terminal pins are corroded/tarnished, I like to spray them with WD-40 and then plug/unplug several times. Repeat if necessary, then blow them out with compressed air. Once they're as clean as possible, apply the dielectric grease to prevent a recurrence of the corrosion.

tll

A little silicone spray on the plastic housing might help. It is not generally recommended that dielectric grease be used on the pins or sockets. The word "dielectric" means insulator, and insulating a pin from a socket would create a voltage drop reducing the current flow to the trailer. Clean the contacts with contact cleaner, maybe a light lube as mentioned above to get the pins to "self clean" themselves, and then another application of contact cleaner. Yes I get the argument that it does reduce the corrosion, and friction between the pin and socket usually scrapes the grease away allowing a good enough connection, but that doesn't change the above.

That then leads to why we use dielectric grease (really just silicone grease)? We use it on the rubber seals on connectors so they slide in properly and become water proof; we use it on spark plug boots to prevent spark arcing down the side of the plug, and to aid in boot installation and removal; along with other uses.