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WirthCo 80911 4-Way Trailer Connector Test Light

Manufacturer

WirthCo

<h3>About WirthCo Engineering</h3><p>With nearly four decades of experience in the automotive aftermarket industry, WirthCo Engineering has established itself as a trusted manufacturer of quality accessories and electrical components. Based in Minneapolis, Minnesota, this engineering-focused company has built its reputation on innovation, holding over 36 patents that reflect a commitment to solving real-world automotive challenges. WirthCo's product philosophy centers on making vehicle maintenance and electrical work easier and safer for professionals and DIY enthusiasts alike.</p><h3>Battery Doctor Brand Excellence</h3><p>WirthCo is perhaps best known for its Battery Doctor® brand, a comprehensive line of electrical accessories designed to help vehicle owners maintain, protect, and monitor their power systems. The Battery Doctor product family includes everything from <a href="/1894-wirthco-battery-disconnect-switches-200143">battery disconnect switches</a> that protect vehicles during storage to sophisticated monitoring systems that track battery health. These solutions are particularly valuable for owners of classic cars, RVs, boats, and seasonal vehicles that require reliable power management.</p><p>The company's expertise extends to complete electrical system protection and maintenance. Their selection of <a href="/1894-wirthco-fuse-2676">fuses</a> and <a href="/1894-wirthco-fuse-blocks-200458">fuse blocks</a> provides essential circuit protection for both OEM replacement and custom electrical installations. Understanding that proper power delivery starts with quality components, WirthCo manufactures <a href="/1894-wirthco-vehicle-battery-2476">vehicle batteries</a> designed to meet the demanding requirements of modern automotive electrical systems.</p><h3>Innovation Meets Practical Design</h3><p>What sets WirthCo apart is their focus on user-friendly design backed by solid engineering. Products like their <a href="/1894-wirthco-multi-purpose-funnel-14561">multi-purpose funnels</a> demonstrate the company's ability to improve even simple maintenance tasks through thoughtful product development. Each WirthCo accessory reflects decades of understanding customer needs in garages, workshops, and on the road.</p><p>Whether you're managing a fleet, maintaining a vintage vehicle collection, or simply looking for reliable electrical components for your daily driver, WirthCo Engineering delivers accessories that combine innovative features with practical functionality. Their continued investment in product development and patent portfolio ensures they remain at the forefront of automotive aftermarket solutions.</p>

Part Number

80911
06/01/2036 3:16 PM
Sale Price

$8.48

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The WirthCo 80911 Trailer Test Light is an essential diagnostic tool for testing 4-way trailer wiring connectors without needing a trailer attached. This handy tester plugs directly into your vehicle's existing 4-way car-end connector to verify proper operation of all circuits including tail lights, brake lights, and turn signals.

Key Features:

  • Tests all four circuits of standard 4-way flat trailer connectors
  • Eliminates need for trailer attachment during wiring installation or troubleshooting
  • Visual LED indicators show proper function of each individual circuit
  • Compact, portable design for easy storage in vehicle or toolbox
  • Durable construction for reliable long-term use

Ideal for DIY installers, RV owners, and anyone who needs to verify trailer wiring functionality before hitting the road. Simply plug into your vehicle's 4-way connector and activate each lighting circuit to confirm proper operation and identify any wiring issues.

WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

product was as shown

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fast and easy.

No problems. Experience was really good. Thanks

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Second day air shipping is great to offer

Quick; easy; done

Great experience

A+shipping was quick, communications were quick

Great price

Easy and no smoke and mirrors.

Thanks

I was looking at reviews after placing my order and was thinking had I read the reviews before ordering I probably would have thought about making my order with this company. I called because I was a little concerned and the lady I talked with was very

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Good so far

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