Curt Manufacturing
Curt Manufacturing 57010 Custom Wiring Harness Extension 10 ft
A 10 ft custom wiring harness extension for trailer, plow and towing equipment
- TypeTrailer, Plow & Towing Equipment
- Extends trailer wiring reach by 10 ft
- Ready-to-install custom harness fits specific vehicles
- Brand-new CURT part number 57010
- Prop 65 chemical warning for California buyers
- Durable construction for towing and plow applications
Custom Wiring Harness Extension
The Curt Manufacturing 57010 extends a vehicle wiring harness by ten feet. It suits owners adding trailer, plow or towing equipment that sits beyond the factory connector reach. The extension carries standard lighting and control signals without modification. Installation uses the existing connector style for a direct fit.
Practical limits of the wiring standard
A ten‑foot extension adds resistance and voltage drop proportional to wire gauge and current draw. Long runs can dim trailer lamps or weaken brake‑signal voltage if the source circuit is already near its limit. Corrosion at the extra junctions increases failure risk in salt or moisture exposure. The added length also creates more snag points on rough terrain.
California Proposition 65 chemical notice
This product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. Buyers who require components free of listed substances must select an alternative harness. The warning applies to the extension as supplied and does not change its electrical function.
Highlights
- Extends trailer wiring reach by 10 ft
- Ready-to-install custom harness fits specific vehicles
- Brand-new CURT part number 57010
- Prop 65 chemical warning for California buyers
- Durable construction for towing and plow applications
Specifications
| Brand | CURT |
|---|---|
| Type | Trailer, Plow & Towing Equipment |
Questions about this item
How do I know the 10 ft length is right for my trailer setup?
Measure from your vehicle socket to the trailer plug with the harness routed along the frame; the 10 ft extension adds exactly that reach so you can bridge any gap without excess cable dragging on the road.
What does the 10 ft extension actually change when I tow?
It lets you connect a trailer or plow whose wiring plug sits farther back than the factory harness reaches, eliminating the need to stretch or splice the original cable.
Does the 57010 use a standard trailer connector that fits my vehicle?
Yes, it follows the common 4‑flat trailer wiring pattern used on most light‑duty towing applications, so it plugs directly into the matching vehicle and trailer sockets.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
