Trailer Plug Corrosion Tips for Canada

Plugging a trailer harness into the vehicle connector at dusk
Trailer wiring

Corroded trailer plugs cause dim lamps, dead pins, and false fuse blows. Clean contacts, protect with dielectric grease, and replace a plug that is cracked or green with crust.

4 Way Flat Connector For Rewiring
4 Way Flat Connector For RewiringCURT 57220$44.09 CADSee the part →
We stock CURT towing gear for this job, with free shipping anywhere in Canada. Prefer the full library? Open the towing guides hub.

Clean method

Disconnect, dry, and clean pins with appropriate electrical contact cleaner. Do not pour water into the socket. A soft brush helps on crusty seven-way blades.

Protect

A thin film of dielectric grease slows salt damage. Cover the vehicle socket when unplugged. Recheck after the first salted-road week each winter.

Parts we commonly sell

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Official CURT context

Official clips from @curtmfg. If an embed stalls, use the YouTube link under the video.

Trailer Wiring Basics

CURT · Official overview

Four-way and seven-way habits before you order a harness.

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How to Select a Trailer Hitch

CURT · Official overview

Classes, receiver sizes, and matching hitch ratings to the trailer.

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