Nilight 50078A 7-Way Trailer Plug Y-Splitter

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Product guide

Nilight 50078A 7-Way Trailer Plug Y-Splitter

The Nilight 50078A 7-way trailer plug Y-splitter connects one truck socket to two trailer-side plugs. It is intended for setups such as a slide-in camper and a towed trailer, but connector fit is worth confirming for your vehicle and equipment.

At a glance

Splits one 7-way truck socket into two male connections for a trailer and slide-in camper.
Plug-in design is described as requiring no cutting or splicing.
Manufacturer claims a spring-loaded dust cover protects connection points.

Price

$33.99Save 15%

Reference price: ~~$39.99~~

Price checked: Nov 14, 2026

View offer

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Pros and cons

Pros

Provides two 7-way male connections from one female truck-side plug, suited to connecting a camper and trailer.
Plug-and-play installation avoids cutting or splicing the existing wiring, according to the listing.
The listing specifies a spring-loaded dust cover for the connection points.

Technical specifications

8 specifications

Identity
Brand	Nilight
Model	50078A

Dimensions and installation
Weight listed	1.4 pounds

Materials and protection
Material listed	Plastic
Poles	7
Connector type	Plug-in
Plug configuration	Female (Truck end), Male (Trailer/Camper ends)

Use and construction
Warranty description	2 year warranty

What to know before buying

The listing describes 7-way round plugs and compatibility with a 7-pin RV socket, but customers report mixed fit experiences. Confirm the connector style and fit with your truck and trailer or camper before purchase. The listing also makes weather-protection claims without specifying a rating.

What’s in the box

Included

1 7-way Y-splitter trailer adapter

Who is it for?

A good fit for

Truck owners who need to connect a slide-in camper and a trailer through one 7-way socket.
Buyers seeking a plug-in splitter rather than a separately routed wiring harness.

Less suited to

Anyone whose vehicle or trailer uses a connector other than the specified 7-way setup.
Buyers who need a documented weatherproof rating or confirmed compatibility with a particular vehicle.

Nilight 50078A 7-Way Trailer Plug Y-Splitter · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 149 ratings

5 stars78%78%
4 stars11%11%
3 stars6%6%
2 stars2%2%
1 star3%3%

Customer feedback highlights that the plug works well, including a mention of usefulness with slide-in campers. Fit experiences are mixed, which matters because the splitter depends on matching the truck's 7-way socket and the trailer-side connectors. The reported feedback supports considering it for this dual-connection use, but does not establish fit for every setup.

Positive themes

Customers report that the plug works well.
A customer highlights its usefulness with slide-in campers.

Mixed feedback

Fit receives mixed feedback.

Frequently asked questions

What does the Nilight 50078A connect?

It has one female truck-side plug and two male ends, intended to connect a trailer and a slide-in camper to one 7-way socket.

Does installation require wiring work?

The listing describes a plug-and-play connection that requires no cutting or splicing.

Will it fit my truck and trailer?

The listing targets vehicles with a 7-way round plug or 7-pin RV socket, but customer feedback reports mixed fit. Check the connector style on both sides before buying.