Curt Group 58975 Manuel utilisateur
58975-INS-RA •PAGE 1
INSTALLATION MANUAL
Tools Required
Ratchet Cutting tool
Socket extension Electrical tape
Torx bit, T-20 Fish wire
Panel trim
removal tool
--
Wiring Location(s)
T1 and T2
Level of Difficulty
Easy
Hardware Photo
WARNING
Do not exceed product rating or tow vehicle lamp load rating, whichever is lower.
Product Registration and Warranty
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Maintenance
Periodic inspection of all wires and connections should be performed
to ensure there is no visible damage or loose connections.
Wiring Location Guide*
for Trucks (T)
T1 Behind driver side taillight housing
T2 Behind passenger side taillight housing
T3 Behind driver side rear bumper
T4 Behind center of rear bumper fascia
T5 Behind passenger side rear bumper
T2
T4 T5
T1
T3
* Representative vehicle shown
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.
Product Photo
58975-INS-RA •PAGE 2
Step 1
Locate the vehicle battery. Look up the
battery location in the owner's manual of
your vehicle. Disconnect the negative battery
terminal. Be sure to fasten this wire down
and away from the battery when completing
the installation process.
Step 3
Carefully remove the taillight straight back
and out of the vehicle and locate the factory
harness. The connectors will be similar to those
on your new custom wiring product. Separate
the connectors from the taillight housing taking
care not to damage the locking tabs.
Step 2
Open the tailgate. Use a panel trim removal
tool to remove the four push fasteners and
the four T-20 Torx bit screws, two per side,
mounted near the taillight.
Note: Fasterners and screws are
located in the sidewall covered by
the tailgate when in the closed position.
58975-INS-RA •PAGE 3
Step 4B - How to use fish wire
A) Fish wire is a way to push or pull
an electrical wire through a blind hole.
Make sure the wire is long enough
to stick out on the other side.
Insert the fish wire through the blind
hole and locate it on the other side.
B) Use tape to secure the harness
to the fish wire and pull back up.
The fish wire or harness may get hung up on
something, if this happens you may have to
push back down, wiggle it around or twist the
wire to loosen it from what it’s hung up on.
Fish wire could be anything from a cut-up wire
hanger, stiff wire, rope or string depending on
what is needed for the installation.
Step 4A
Starting on the driver side, use a
fish wire to route down into the inside
of the box in the taillight opening.
Locate the housing end of the RV harness
with yellow wire. Attach it to the fish wire,
and pull through from the bottom of the
vehicle into the taillight opening. Attach the
housing to the driver-side vehicle factory
harness, making sure the connector is fully
inserted with the locking tabs in place.
Step 6
Route the housing end with green wire
to the passenger side along the backside
of the bumper of the vehicle.
Repeat step 5 on the passeneger side
of the vehicle with the green wire.
A
B
A
B
58975-INS-RA •PAGE 4
Step 7
On the driver side, locate a grounding point near the box such as an existing screw or
bolt in the frame of the vehicle or drill a 3/32"pilot hole. The area should be free from
rust, dirt, and paint (abrasive pad/paper to remove rust and paint). Secure the white
ground wire with the ring terminal on the existing fastener or with the provided ground screw.
CAUTION
Check for miscellaneous items that may be hidden behind or under
any surface before drilling to avoid damage and/or personal injury
Step 8
Attach the taillight to the respective side harness and reinstall.
NOTICE
Once the custom wiring harness is installed, verify that the harness is functioning
by attaching the 4-flat to any vehicle with functioning trailer lights. The taillights
on the tow vehicle should function along with the taillights on the towing vehicle.
Reinstall the taillight fasteners
Step 9
Route the 4-flat along the frame rail on
the driver side. Zip tie as needed along
the frame rail to keep the 4-flat away from
hot spots, pinch points or moving objects.
Loosely secure the zip ties.
Step 10
Route in between the frame and
the fuel tank to the front of the vehicle
and up to the rear of the front tire.
58975-INS-RA •PAGE 5
Step 12
Route the 4-flat harness along the
driver-side inner fender to the front of the
truck. Mount the 4-flat to the inner fender
between the fuse panel and the head light.
Step 13
Use a panel trim removal tool to remove the trim cover. Route the 4-flat wire along the
driver-side inner fender under the removed cover. Zip tie as needed to the front of the
vehicle. Route to just behind the passenger-side head light and mount to the inner fender.
Secure any excess wire so that it is not drooping or dangling, but not so tight that
it causes unnecessary strain to the wire which could lead to breakage over time.
After removing slack from the 4-flat wire, tighten any zip ties and add as needed.
Use a zip tie to fasten any excess wire to a solid spot along the driver-side inner fender.
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.
Step 11
Once you reach the rear of the front tire, route
the 4-flat between the body and the frame.
From under the hood, use fish wire to pull
the harness up between the inner and outer
fender to the top of the engine compartment.
Refer to step 4B on how to use fish wire.
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