Do any of you guys use liquid tape on your electrical connections?

I have just recently put on a lot of aftermarket lights such as the backup lights and a couple of light bars upfront.
I was wondering if I needed to put liquid tape on the connectors for the relays or the connectors for where the lights plug-in to the power wire to seal everything up and keep water and whatnot out of where it does not belong.

 

Only time I ever use it is on bare wire.

 

What about the relays? No need to seal em up?

 

When I use aftermarket relays I always use connectors that have the plastic shield on them.

 

The connectors I have do have the plastic shields on them. I guess there's no reason to apply liquid tape around all of these connectors?

 

Nope. Unless there is a possibility of something metallic making contact with them.