How to Select a Trailer Hitch
Hitch class is not your first call when lights are dead. Still, know what receiver you are feeding before you chase a fuse that only feeds the plug.
Watch on YouTubeTrailer Wiring Fuse Location Tips (Canada)
Dead trailer lights often start at a blown fuse or a tired add-a-circuit, not at a brand-new harness you just bought. Before you replace the entire plug path, open the vehicle fuse chart, find the circuit the harness instructions name, and confirm that fuse still has continuity. This Canada tips page walks that pretest in plain parts-counter language, points you at live CURT testers and light converters we stock, and links the deeper fuse, tester, and converter pages already on this store. No invented amp ratings and no invented legal cutoffs.
Built for Canadian tow shoppers chasing dark trailer lights. Free shipping on CURT towing gear from Lots of Parts when the SKU is live on this store.
Pair this page with
trailer wiring fuse tips,
trailer wiring tester tips, and
trailer light converter tips.
Prefer the full index?
Open the towing guides hub.
Watch these CURT videos first
All four videos are from the official CURT YouTube channel (@curtmfg). Use them for class selection, install habits, wiring basics, and ball-mount height before you dig into the product cards below.
If an embed does not load, use the YouTube link under the card.
Trailer Hitch Installation Techniques
A clean hitch install does not prove the trailer circuit is healthy. After bolts are torqued, come back to the fuse chart and a simple lights pretest.
Watch on YouTubeHow to Connect a Trailer Wiring Harness
Harness connection habits matter. A shorted trailer plug or a pinched ground can open the fuse the moment you key the lights on.
Watch on YouTubeHow to Choose a Ball Mount and Trailer Ball
Ball-mount height is a later job. Get running, turn, and brake lights honest before you worry about rise versus drop.
Watch on YouTubeStart at the fuse chart, not at a new harness
When trailer lights go dark, the tempting fix is a new harness. Plenty of dead-light calls end with a blown fuse in the vehicle panel, a fuse tap that worked loose, or an add-a-circuit that never got a solid seat. Open the owner manual fuse chart for your year and badge. Find the circuit the harness instruction sheet names. Pull that fuse and inspect it under good light before you order another plug.
An add-a-circuit is a common install path when the vehicle needs a dedicated tap. If yours looks melted, loose, or empty where a fuse should sit, that is your first parts check. We do not invent amp numbers on this page. Match the amp rating printed on the harness sheet and on the fuse the kit tells you to use.
Our longer trailer wiring fuse tips page digs into shorted plugs and why a fuse keeps opening after a fresh install. Use this page for location habits and the pretest order. Use that page when the fuse story is the main complaint.
A practical lights pretest before you replace parts
Step 1Unplug the trailer
Key the vehicle lights on with the trailer disconnected. Confirm the tow vehicle still has running lights of its own.
Step 2Read the fuse chart
Find the trailer or accessory circuit the harness sheet names. Inspect that fuse and any add-a-circuit seat.
Step 3Test the vehicle plug
Use a four-way connector tester on the vehicle end before you blame the trailer cord.
Step 4Then test the trailer
Only after the vehicle plug looks honest should you chase bulbs, grounds, and converters on the trailer side.
Fuse habits
Chart first
The owner manual fuse chart beats a forum guess. Name the circuit, then pull the fuse the harness sheet points at.
- Look for melted add-a-circuit seats
- Match amp ratings on the kit sheet
- See wiring fuse tips for shorted-plug calls
Tester
Vehicle plug pretest
A four-way connector tester tells you if the vehicle end is feeding running, turn, and brake signals before you replace trailer wiring.
- Live CURT 58260 four-way tester on this shelf
- CURT 57674 dual-output adapter with tester when you need that path
- Deeper habits on wiring tester tips
Converter
When the car needs help
Some vehicles need a taillight converter so trailer lamps share the car signal cleanly. That is a different job than a blown fuse.
- Live CURT converter SKUs below
- Confirm the live card for your wiring style
- See light converter tips
Live CURT testers and converters we stock
These SKUs are storefront available on this store today. Use a tester to prove the vehicle plug before you replace a harness. Open a converter only when the vehicle lighting style needs that translation, not as a substitute for a blown fuse.
TesterCURT 58260Four-way connector tester for a quick vehicle-plug pretest before you blame the trailer.
Adapter and testerCURT 57674Dual-output electrical adapter with tester when that path matches your plug setup.
ConverterCURT 56130Non-powered three-to-two-wire taillight converter when the live card fits your vehicle style.
ConverterCURT 56187Powered three-to-two-wire taillight converter when the live card calls for a powered path.
ConverterCURT 56236Taillight converter option when the live title matches the lighting style you are feeding.
| Topic | What we tell shoppers |
|---|---|
| Dead lights first call | Check the named fuse and any add-a-circuit before you replace the harness. |
| Amp honesty | We do not invent amp ratings. Follow the harness sheet and the fuse the kit names. |
| Pretest order | Vehicle fuse, then vehicle plug with a tester, then trailer bulbs and grounds. |
| Converter job | Converters translate lighting styles. They do not fix a blown fuse by themselves. |
| Deeper pages | Open fuse tips, tester tips, and converter tips when you need the longer walk-through. |
Related guides worth opening next
Wiring fuse tipsShorted plugs and fuses that keep opening after a harness install.
Wiring tester tipsHow to read a plug tester without guessing.
Light converter tipsWhen a converter is the real fix versus a fuse.
First tow checklistLights, chains, coupler, and tire pressure habits.
Parts-counter summary: dead trailer lights often start at a blown fuse or a weak add-a-circuit, so read the vehicle fuse chart and the harness sheet before you replace the whole plug path, pretest the vehicle end with a live CURT tester, and only then shop converters or harness parts. Free shipping on live CURT towing gear from Lots of Parts across Canada when the SKU shows available on this store.
