Curt Manufacturing 58957 User manual

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INSTALLATION MANUAL
Product Photo
WARNING
Do not exceed product rating or tow vehicle lamp load rating, whichever is lower.
Maintenance
Periodic inspection of all wires and connections should be performed
to ensure there is no visible damage or loose connections.
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.
Included Parts
Level of Difficulty
Moderate
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.
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
S9 S10
S5 S6 S7
S1 S3
S8
S4 S2
* Representative vehicle shown
Tools Required
Ratchet Drill
Socket, 12mm Drill bit, 3/32"
Socket, 15mm Fishwire
Flathead screwdriver Socket extension
Utility knife Electrical tape
Panel trim
removal tool
--
Wiring Location(s)
S1 and S2

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Step 1
Locate the vehicles battery in the engine
compartment on the passenger side and
disconnect the negative battery terminal.
Be sure to fasten this wire down and
away from the battery while completing
the installation process.
Step 3
Remove the taillight by pulling it straight
rearward. Locate the vehicle's taillight wiring
connectors. 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. Set the taillight aside.
Step 2
Open the hatch and remove the two fastener
covers with a small, flat blade screwdriver.
Open the vehicle's rear hatch. Starting on the
driver side, remove the two taillight fastener
covers with a small, flat blade screwdriver
Step 4
Repeat Steps 2 and 3 on the passenger side.

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Step 6
Repeat Step 5 on the passenger side using the RV harness end with the green wire.
From under the rear bumper, zip-tie as needed. Do not completely tighten, allowing for adjustment later.
Step 7
Locate a suitable grounding point near the connector such as an existing screw with nut in the vehicle frame or drill a 3/32" pilot hole for the
provided screw. The area should be free of rust, dirt and paint. Secure the white ground wire using the ring terminal and provided 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
Connect the taillights to the custom harness. This is for testing purposes only and the taillights should be removed once this test is complete.
NOTICE
Once the RV harness is installed, verify that the harness is functioning by attaching the 4-way flat to any vehicle with functioning
taillights. The taillights on the vehicle to be towed should function along with the taillights on the vehicle that is powering them.
Step 9
If all functions test out, reinstall all removed items.
Step 5
On the driver side, with the taillight removed,
use a fishwire to drop down through the
opening so the fishwire comes out the
underside of the vehicle.
Locate the end of the RV harness with the
yellow wire and route it up through the opening
of the removed taillight. Insert the RV harness
end with yellow wire between the separated
connectors. Make sure the connectors are
fully inserted with locking tabs in place.
How to Fishwire
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.
A
B
A
B

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Step 11
Route the 4-flat up to the rear of the front
tire. From the engine compartment under the
hood, on the driver's side, run a fishwire down
between the inner and outer fender. The wire
will come out at the back of the front tire.
Step 12
Route the wire between the body and the
engine mount. Attach to the fishwire and pull
the 4-flat up into the engine compartment.
Route the 4-flat along the driver side front
fender to an accessible mounting location
in front of the vehicle.
Step 10
Route the 4-flat of the RV harness from the
rear of the vehicle, over the top of the rear
drive-line suspension, along the body frame
to the back of the front tire. Use zip ties to
secure the harness in place.
Do not tighten, allowing for later adjustment.
Step 13
Pull all of the excess wire so that it is not loose. Do not pull it too tight, this can cause unnecessary strain on
the wire and could cause a breakage over time. After removing all slack from the 4-flat wire, tighten any cable
ties and add as needed. Use a cable tie to fasten any excess wire to a solid spot along the driver's 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.