Will this work on a 2019 jeep

If it has the 4 way flat you can or if jeep has pig for that purpose near the back bumper

What gauge wire is used?

It looks like it is about 18 gauge. A little lighter than I would have wanted. I wired it with a 20 amp fuse and have not had any problems with overheating wires. I am pulling a medium sized camping trailer with full lights, in-line brake controller, and 3 wireless cameras.

Will the lights work if I don’t use the brake wires?

Dear Rasa, Here is a video includes 3 detail wiring diagram of 'MECMO Multi-tow 4 Pin to 7 Way and 4 Flat Adapter'. Since it sounds like you don't need the brake output you can leave the additional connections disconnected. All you will need to do is plug in your existing 4-way to the 4-way plug on the adapter. Once this is done, the 7-way connector will have the functionality of your 4-way. However, if your towed vehicle equip with brake light, you will still need to splice the brake wire to keep all function works. Thank you MECMO Service Team

Hi dear, MECMO trailer harness use only Amazon FBA which offers all customer free return and replacement. If you receive a defective product or the trailer adapter is under your expectation, you could return or ask for replacement through Amazon. It will be very convenience and does not charge you any fee for replacement in 30 days.

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🚚 Connect More, Stress Less — The Ultimate Dual-Output Trailer Adapter

MOUNT LIKE A PRO - Complete mounting bracket, screws, and nuts included for a secure, professional-grade installation every time.
TOW TWICE THE TRAILERS - Dual-output design lets you connect both 7-way RV and 4-way flat plugs simultaneously for ultimate towing flexibility.
PLUG PLAY CONVENIENCE - Standard 4-wire flat vehicle socket adapts effortlessly to multiple trailer wiring types—no extra hassle.
BUILT TO BRAVE THE ELEMENTS - Premium ABS plastic and tin-plated copper terminals ensure long-lasting corrosion resistance and reliable conductivity.
CLEAN PROTECTED CONNECTIONS - Spring-loaded dust cover keeps terminals pristine, preventing dirt and moisture from compromising your setup.

The MECMO Dual-Output Trailer Wiring Adapter converts a 4-wire flat vehicle socket into both a 7-way RV blade and a 4-way flat trailer plug, enabling versatile towing options. Crafted from durable ABS plastic and tin-plated copper terminals, it offers corrosion resistance and stable connectivity. The kit includes a mounting bracket and hardware, plus a dust cover to protect terminals, making it a reliable, all-in-one solution for professional-grade trailer wiring.

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Brand	MECMO
Material	Acrylonitrile Butadiene Styrene, Copper, Plastic
Item Weight	0.56 Kilograms
Connector Type	4-way Flat, 7-way Rv Blade
Wire Diameter	1.63 Millimetres
Manufacturer	MECMO
Package Dimensions	19.99 x 14.4 x 8.41 cm; 558 g
Item model number	4 to 7 Pin Trailer Light Adapter
Manufacturer Part Number	MEUX2203-1
Country of Origin	USA
Item Weight	558 g

MECMO Dual-Output 4-Way Flat to 7-Way RV Blade and 4-Way Flat Female Trailer Wiring Adapter Connector Kit, Adapt 4-Way Flat Vehicle-Side Socket to Multiple Trailer Plugs with Mounting Bracket

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