Towing Equipment› Trailer Wiring and Electronics

Nilight

7-Pin to 4-Pin Trailer Adapter Plug

$8.99

SKU: TL-05

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return

Overview

The Nilight TL-05 is a 7-pin to 4-pin trailer adapter plug designed to bridge the connection between vehicles with a 7-way round socket and trailers with a 4-way flat plug. It features a rugged nylon housing that offers excellent water, high-temperature, wear, and corrosion resistance. The adapter includes strong fixation to ensure it stays securely in place.
Show original supplier description
The Nilight TL-05 trailer adapter plug provides a reliable solution for connecting vehicles equipped with a 7-way round socket to trailers that utilize a 4-way flat plug. This adapter is constructed with a rugged nylon housing, offering superior resistance to water, high temperatures, wear, and corrosion, which contributes to an extended product lifespan. The design incorporates a strong fixing mechanism within the standard plug, ensuring that the 7-pin connection holds the adapter securely without the risk of it falling off. Its practical and compact size makes it easy to store in a glove box or toolbox, minimizing space consumption. Installation is straightforward, featuring a simple plug-and-play design that requires no tools for removal or installation, thanks to its reasonable structural design. This adapter boasts wide adaptability, making it suitable for a variety of applications including commercial vehicles, semi-trailers, trailers, RVs, off-road vehicles, trucks, and even boats, yachts, and ships. It effectively converts a 7-hole trailer connector to a 4-hole interface, ideal for connecting external trailer signal light cables and displaying trailer signals. The waterproof, dust-proof, and anti-corrosive nature of the housing ensures performance in diverse environments.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandNilight
Part NumberTL-05
CategoryTowing Equipment
5,000+ Trusted brands
1M+ Enthusiasts
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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