The Camco 55-1504 T-Connector is the cleanest way to add trailer lighting circuits to your tow vehicle without touching a wire stripper. It inserts directly into your vehicle's existing wiring harness connector -- between the vehicle plug and the factory socket -- transferring brake, turn, and running light signals to a standard 4-way flat trailer connector. No splicing, no cutting, no voided warranties from butchered factory wiring.
Most T-connectors on the market ask you to splice into your vehicle's tail-light wiring, which means cutting factory circuits, adding corrosion points, and risking electrical gremlins for years to come. The Camco 55-1504 takes a different approach: it intercepts the existing harness connector between the factory plug and socket, passing signals through to both the vehicle's own lights and your trailer's 4-way flat simultaneously.
Installation takes minutes. Locate your vehicle's tail-light harness connector (typically found behind the bumper or inside the rear quarter panel), unplug the factory connection, and insert the T-connector in-line. No tools beyond a trim panel removal tool in most cases. The 16-gauge bonded wire is rated for typical trailer lighting loads including stop, turn, and tail light circuits.
Intercepts the factory harness connector directly. No wire cutting, no stripping, no crimping required for a clean, reversible install.
16 AWG bonded conductors handle typical trailer lighting loads -- stop, turn, tail, and ground -- without overheating or voltage drop over short runs.
Industry-standard 4-way flat connector mates with the vast majority of trailer pigtails. Compatible with utility, boat, camper, and small travel trailers.
Because no factory wires are cut, the T-connector can be removed and your vehicle returned to stock condition at any time -- ideal for leased vehicles or resale.
A T-connector is a wiring harness pass-through adapter. It has three ends: one that plugs into the tow vehicle's factory tail-light socket, one that receives the factory tail-light plug, and one that outputs a standardized trailer connector (4-way flat in this case). Because it sits in-line with existing wiring, the tow vehicle's lights continue to function normally while trailer light signals are simultaneously fed out through the 4-way flat.
This is fundamentally different from a converter box or a hardwired splice kit. There are no relays or diodes required for most passenger vehicles with standard tail-light circuits. The T-connector simply routes the existing signals.
The 4-way flat connector carries four circuits on a flat, rectangular 4-pin plug:
This 4-wire standard covers all lighting required by law for trailers under a certain gross vehicle weight. It does not carry auxiliary power (12V), electric brake output, or reverse light signals. For trailers requiring brakes or a 12V charge circuit, a 5-way or 7-way connector system is needed instead.