COROLLA CROSS 118864 T-One Connector Instruction Manual
- June 4, 2024
- COROLLA CROSS
Table of Contents
COROLLA CROSS 118864 T-One Connector
Installation Instructions
ALWAYS read and follow all warnings and instructions included with the
purchase before beginning installation. Keep it for future reference.
DO NOT exceed the lower towing manufacturing rating (including in your
vehicle owner’s manual) or specific amperage ratings stated on the product.
ALWAYS read, understand, and follow all warnings and instructions printed
on the tow vehicle’s battery.
ALWAYS wear safety glasses and use all safety precautions during
installation.
TOOLS REQUIRED
Trim Panel Remover, 10mm Socket & Ratchet or 10mm Wrench, Drill (3/32” Drill Bit), Wire Crimpers, Wire Cutters, Philips Head Screwdriver, Test-probe
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Open hatch, locate and remove trim panels covering the tail light mounting screws. Using a 10mm socket remove the mounting screws on both driver’s and passenger’s tail lights, being careful not to break trim panel mounting tabs. AB
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Locate the tail light wiring connectors. Disconnect the vehicle wiring harness from both taillight sockets. Separate two connectors being careful not to break the locking tabs, Set both tail lights aside. C
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Beginning on the driver’s side and underneath the vehicle, route the harness containing the yellow wire up through the opening between the vehicle bumper and body to the driver’s side taillight pocket.
NOTE
For ease of installation use a fish wire between taillight pocket and rear fascia to pull harness from underneath vehicle out through the taillight pocket. -
Locate the connectors matching the ends of the
T- One® Connector. Insert the T-One® Connector
end containing the yellow wire in between the 4 Pin connector. Insert the T-One® Connector end containing the brown wire in between the 2 Pin connector. All connectors surfaces should be clean and free of dirt. C -
Underneath the vehicle, determine a suitable mounting point behind the rear bumper fascia on the driver’s side. Mount the T-One® Connector black box using the double-sided tape provided.
NOTE: Clean flat mount surface area using a 50-50 mixture of rubbing alcohol and water to mount the lighting module black box.
CAUTION: Make sure lighting module is mounted so that the epoxy side of the module is pointed towards the ground to prevent any water buildup. -
Locate a suitable grounding point near the black box such as an existing ground stud or drill a 3/32” hole and secure the white wire using the eyelet and screw provided. (Do not drill into vehicle floor or bed.) Clean dirt and rustproofing from area.
WARNING: If routing the wire thru a grommet and along the exterior of the vehicle, be careful to avoid any hot pipes, heat shields, the fuel tank or any other points that may pinch or break the wire. -
Route harness containing the green wire underneath the vehicle up through the opening between the vehicle bumper and body to the passenger’s side taillight pocket.
NOTE For ease of installation use a fish wire between taillight pocket and rear fascia to pull the harness from underneath vehicle out through the taillight pocket -
Locate the connectors matching the ends of the
T- One® Connector. Insert the T-One® Connector end containing the green wire in between the 4 Pin connector. Insert the vehicle wire end containing the 2 Pin connector into the matching socket in the tail light assembly. All connector surfaces should be clean and free of dirt. C -
Disconnect the vehicle’s Negative (-) battery cable. If not removed, remove the fuse from the yellow fuse holder (provided). After cutting the fuse holder wire, attach the ring terminal and secure to the vehicle’s Positive (+) battery cable. Connect the other end of the fuse holder to the black 12 ga. wire, using the yellow butt connector (provided). D
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Beginning from the front of the vehicle, route the black 12 ga. wire rearward along the frame rail avoiding any hot pipes, heat shields, the fuel tank or any other points that may pinch or break the wire. WARNING
If routing the wire thru a grommet and along the exterior of the vehicle, be careful to avoid any hot pipes, heat shields, the fuel tank or any other points that may pinch or break the wire. -
Connect the other end of the black 12 ga. wire to the black power wire located on the T-One® Connector’s black box, using the yellow butt connector (provided).
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Reconnect the vehicle’s Negative (-) battery cable and install the 15 amp fuse into the fuse holder from step 9.
WARNING: Read and follow all warnings and cautions printed on the tow vehicle’s battery. All connections must be complete for the T-One® Connector to function properly. Test and verify installation with a test light or trailer once installed. For initial test, reset vehicle electrical system by temporarily removing the key from the ignition. -
Reinstall the plastic trim panels, threshold, storage covers, floor covering and other items that may have been removed during installation, being careful not to pinch or cut the wires.
NOTE: Secure all loose wires and mount the Trailer Tow Harness in an accessible location with a bracket or electrical box.
WARNING: Overloading circuits can cause fires. DO NOT exceed stated product ratings. Read vehicle’s owner’s manual & instruction sheet for additional information.
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