7-Way Trailer Plug Tester + Adapter – Heavy-Duty Round Connector (7-Pin)

Name: 7-Way Trailer Plug Tester + Adapter – Heavy-Duty Round Connector (7-Pin)
Brand: ROADWEST
Price: 12.34 USD
Availability: InStock
Rating: 4.9 (21 reviews)

Vehicle Fitment

Universal

Style 7 pin round trailer connector 7 way trailer plug universal 7 way trailer plug

$12.34 USD

$12.34 USD ~~$12.99 USD~~

QC VERIFIED Built for Truckers. We stock it, inspect it, and verify fitment - so you get the right part first time, for less.

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DESCRIPTION

Up to 5% off

Keep your trailer wiring reliable and easy to inspect with the ROADWEST 7 Way Trailer Plug Tester & Round Cord Assembly. Designed for semi trucks, trailers, RVs and farm equipment, this heavy-duty plug helps connect tail, reverse, turn signal and auxiliary circuits while allowing quick visual access and testing.

The 7 way trailer plug features a durable, galvanized zinc housing with nickel-plated copper pins for excellent electrical conductivity and corrosion resistance. Hidden terminals and a sealed body help protect internal wire splices from dirt, rain and road debris, extending the life of your trailer wiring.

A built-in spring guard lets you mount or position the plug in a convenient spot on the trailer, keeping the connector accessible while reducing strain on the wiring. The ergonomic plug body includes side tabs that make it easier to grip when plugging in or disconnecting from the vehicle.

Wide applications – Ideal for connecting tail, reverse, turn signal and auxiliary power circuits on RVs, campers, caravans, food vans, DIY brake controllers, farm tractors, heavy implements and semi truck trailers.
Heavy-duty construction – Galvanized zinc body with nickel-plated copper pins for stable conductivity and excellent corrosion resistance in tough environments.
Spring guard design – Integrated extension spring helps support the cable and keeps the connector accessible on the trailer.
Abrasion resistant – Hidden wire terminals protect splice points from dirt, moisture and abrasion for longer service life.
Easy to grip – Ergonomic plug shape with side tabs for better grip when inserting or removing the connector.

Brand	ROADWEST
Product Type	7 Way Trailer Plug Tester & Round Wiring Harness
Connector Type	7 Point Connection, 7 Way Plug
Application	Semi Truck Trailer, RV, Camper, Caravan, Food Van, Farm Tractor & Heavy Implements
Material	Galvanized Zinc Housing, Nickel-Plated Copper Pins, Spring Guard
Item Weight	Approx. 0.35 kg
Special Features	Spring Guard Support, Hidden Terminals, Abrasion & Corrosion Resistant, Easy-Grip Tabs
Fit Type	Universal 7 Way Trailer Connector (Check plug style before purchase)
Color	Metallic / Black Components
Included Components	1 × 7 Way Trailer Plug Tester with Round Wiring Harness & Spring Guard
Manufacturer	ROADWEST

Shipping Policy

Most ROADWEST orders are processed from our U.S. warehouses within 1–2 business days (Monday–Friday, excluding major U.S. holidays).

We currently ship within the United States only and do not deliver to P.O. Boxes, APO/FPO/DPO addresses, or international addresses.

Shipping Area: United States only
Process Time: In-stock items are usually processed within 1–2 business days (Mon–Fri, excluding major U.S. holidays)
Delivery Method: Standard ground for most items; LTL freight for oversized or extra-heavy parts
Delivery Time: After shipment, delivery typically takes 3–7 business days, depending on item size, destination, and carrier performance
Returns: Most unused items may be returned within 30 days of delivery, subject to inspection and our return guidelines

For full details, please review our Shipping Policy and Easy Return & Refund Policy before placing your order.

Warranty

ROADWEST stands behind the parts we sell. Unless otherwise stated on the product page, your purchase is covered by a 1-Year Limited Warranty against manufacturing defects under normal use.

What’s covered

Defects in materials or workmanship
Premature failure caused by factory-related issues

What’s not covered

Normal wear and tear, cosmetic aging, corrosion from environment/road salt
Damage from improper installation, incorrect wiring, modifications, misuse, or accidents
Labor costs (installation/removal), downtime, towing, or other indirect costs

How to file a claim

Contact us with:

Order number
Product name / SKU
Clear photos or a short video showing the issue

If approved, ROADWEST will provide an appropriate resolution (replacement parts, replacement unit, or refund/credit).

Please do not send items back without return authorization.

For more details, see our Shipping Policy, Easy Return & Refund Policy, and Warranty pages.