Trailer wiring without connector guesswork.

Match 4-pin, 7-way and vehicle-specific wiring components to the tow vehicle and trailer requirements.

WHAT MATTERS

Built around the complete towing picture

TowGauge separates vehicle identity, manufacturer ratings, vehicle-specific labels and equipment fitment rather than treating them as one data source.

Vehicle side

Confirm factory wiring and connector already installed.

Trailer side

Lighting-only trailers differ from trailers with electric brakes.

Adapter only when appropriate

An adapter changes the connector shape; it does not create missing circuits.

HOW IT WORKS

A clear path from question to answer

Inspect vehicle connector

Identify existing 4-pin/7-way capability.

Identify trailer needs

Confirm lights, brakes and auxiliary power requirements.

Match harness

Use vehicle-specific fitment data for the final SKU.

TOWGAUGE

Know your numbers. Match your setup.

Start with the source-backed vehicle and build the towing decision from there.

Check your vehicle