This is what goes on a connection before you close it up. A crimped terminal, a battery post, a trailer plug, a bulb socket, a ground strap — all of them fail the same way, which is moisture getting into the joint and quietly building resistance until the circuit misbehaves or stops.

The gel is dielectric, so it does not interfere with the contact, and it displaces water and air out of the joint so corrosion has nothing to work with. On a trailer connector that lives behind the wheels in road spray, this is the difference between lights that work every time and lights you have to wiggle.

The 14.1 oz tub is the install size — buy this one if you are wiring a build rather than fixing a single plug.

Specs

• Dielectric anti-corrosion gel
• For terminals, battery posts, trailer plugs, bulb sockets, grounds
• Displaces moisture, prevents corrosion build-up
• 14.1 oz canister
• Manufacturer part number 82016
• Shipping weight: 1 lb

Bundle and save on shipping. Small parts like this ship in the same box as the rest of your order — add a few to one order and you pay shipping once.