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Curt Group 56543 Installation Manual

Vehicle-side custom 4-pin trailer wiring harness

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INSTALLATION MANUAL
Level of Difficulty
Difficult
Installation difficulty levels are based on time
and effort involved and may vary depending on
the installer level of expertise, condition of the
vehicle and proper tools and equipment.
Electrical Ratings
Signal circuits
5.0-amps per side
Tail / Running Circuits
7.5-amps total
Check vehicle owner's manual or contact
the vehicle manufacturer for more information.
Wiring Location(s)
S1 and S2
Wiring Location Guide*
for SUVs and Vans (S)
S1
Behind driver side taillight housing
S2
Behind passenger side taillight housing
S3
Behind driver side rear access panel
S4
Behind passenger side rear access panel
S5
Behind driver side rear bumper
S6
Behind center of rear bumper
S7
Behind passenger side rear bumper
S8
Under rear floor panel
S9
Behind driver side rear access panel
S10 Behind passenger side rear access panel
S10
S9
S1
S2
S3
S4
S8
S5
S6
S7
* Representative vehicle shown
Tools Required
Ratchet
Wire cutter
Ratchet extension
Wire stripper
10mm socket
Wiret crimper
Utility knife
Panel trim
removal tool
Flathead screwdriver
56543-INS-RA
09/04/2024
WARNING
Do not exceed product rating or tow vehicle lamp load rating, whichever is lower.
Be sure not to lay tools a crossed the positive (typically noted with red covers or a
red '+' symbol). This can cause a ground to short causing sparks and / or electrical shocks.
The battery connection must be fuse-protected, 15-amp max. Exceeding
the product rating can cause loss of warranty, overheating and potential fire.
Product Photo
Hardware Photo
NOTICE
Before you begin installation, read all instructions thoroughly.
Proper tools will improve the quality of installation and reduce the time required.
All steps must be followed to ensure the product will function properly. Once installed,
test for proper function by using a test light or connecting a properly wired trailer.
Maintenance
Periodic inspection of all wires and connections should be performed
to ensure there is no visible damage or loose connections.
ECN12166
CCD-0009419
PAGE 1 OF 5

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Summary of Contents for Curt Group 56543

  • Page 1 Periodic inspection of all wires and connections should be performed 10mm socket Wiret crimper to ensure there is no visible damage or loose connections. Utility knife Panel trim removal tool Flathead screwdriver 56543-INS-RA • 09/04/2024 • ECN12166 • CCD-0009419 •...
  • Page 2 Step 2 Using a panel trim tool, remove the taillight fastener from the trim cover. Remove the two (2) 10mm nuts securing the taillight in place on each side. 56543-INS-RA • 09/04/2024 • ECN12166 • CCD-0009419 •...
  • Page 3 Route the green wire under the hatch opening trim and threshold, past the battery compartment and into the passenger-side taillight access panel. Install the green wire's housing between the factory taillight connector and taillight. 56543-INS-RA • 09/04/2024 • ECN12166 •...
  • Page 4 Secure any loose wires with the provided cable ties. Reinstall all items removed during install. If it was disconnected at the beginning of the installation, reconnect the negative battery terminal. Install the provided 4-flat dust cover to help prevent corrosion. 56543-INS-RA • 09/04/2024 •...
  • Page 5 (percer un trou de 3/32 po au besoin) Conectar el terminal de anillo del cable a tierra blanco a la carcasa del vehículo utilizando el tornillo suministrado (haga una perforación de 3/32" si es necesario) 56543-INS-RA • 09/04/2024 • ECN12166 •...