CURT 57184 4-Way Flat Electrical Adapters Instruction Manual

: June 4, 2024
: Curt

Table of Contents

PART NUMBERS
4-WAY FLAT ELECTRICAL ADAPTERS
TOOLS NEEDED
10 – 1/2″
INSTALLATION / SAFETY INSTRUCTIONS
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

INSTALLATION INSTRUCTIONS

WARNING: DO NOT EXCEED PRODUCT RATING OR TOW VEHICLE LAMP LOAD RATING, WHICHEVER IS LOWER

PART NUMBERS

Pkg#	From Vehicle	To Trailer	Mounting Bracket No

Dual Output

57604	4-way ﬂat	4-way ﬂat	Yes

4-WAY FLAT ELECTRICAL ADAPTERS

CURT 57184 4-Way Flat Electrical Adapters - fig1

TOOLS NEEDED

1/8″ drill bit
Drill
Phillips screwdriver
Wire stripper
Cutting tool| Terminal crimpers
Test light
Three self-tapping screws,

10 – 1/2″

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Never attach the mounting bracket directly to the hitch by cutting, welding or drilling into the hitch Be sure of what is behind the surface that you are going to be drilling. Stay clear of brake lines, fuel lines, wiring or any other components that may harm the operation of the vehicle.

INSTALLATION / SAFETY INSTRUCTIONS

Locate the vehicle’s 4-way flat trailer wiring connector. If the vehicle is not equipped with a 4-way flat trailer connector, you will need to install a custom wiring harness or another 4-way flat trailer connector before continuing with the installation. Locate a suitable mounting location on the tow vehicle for the combination harness. The mounting bracket (if included) should be attached to the vehicle’s bumper or another suitable surface. The connectors must be mounted in an area that is within reach of the trailer’s wiring harness, near the center of the vehicle. Using the bracket (if included) or equivalent as a template, drill 1/8″ holes into the mounting surface. Secure the bracket to a suitable mounting area on the vehicle by using #10 – 1/2″ self-tapping screws (not included).

**WARNING:** Never attach the mounting bracket directly to the hitch by cutting, welding or drilling into the hitch. Attach the harness connectors to the mounting bracket. For the 6- or 7-way connector, feed the entire harness through the large mounting hole in the bracket and position the connector against the face of the mounting bracket. Using the supplied mounting hardware, attach the connector to the bracket. Slide the 4-way flat connector into the side mounting slot until the connector is secured in place.

CURT 57184 4-Way Flat Electrical Adapters - fig2

Plug the combination harnesses’ trailer-style 4-way flat connector into the tow vehicle 4-way flat connector. This connection will provide the tail lights, stop lights and turn signal
functions. See below picture.

Determine a suitable grounding point within reach of the combination harness to attach the grounding screw. Be sure that the area is clean of any dirt, debris or undercoating and drill a 1/8″ hole.

WARNING: Check for miscellaneous items that may be hidden behind or under any surface before drilling to avoid damage and/or personal injury.
Attach the combination harnesses’ white wire with the ring terminal to the 1/8″ hole that was drilled, using a #10 – 1/2″ self-tapping screw. This ground connection is required for the harness to work properly. The white wire on the vehicle’s 4-way flat connector will not support the ground (-) functions of the combination harnesses 4-way flat and 6- or 7-way connector.

Failing to properly ground the product can cause loss of warranty, overheating and potential fire.
Using 12 gauge (minimum) wire and butt-connectors, connect the remaining wires to the appropriate functions as listed below.

Yellow – Auxiliary or backup lights
Blue – Electric brakes
Black – Positive power (+) with appropriate inline fuse

Confirm proper function with a test light or by using a properly functioning trailer. Secure any loose wires by using cable ties or equivalent products.

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