Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

Knox Trailers · Hardware & Fasteners
120-6-4
In stock · ships from Knoxville
This is a 6-way round to 4-way flat trailer wiring adapter. It converts the round 6-pin connector on a tow vehicle to the flat 4-pin plug used on many trailers for lighting and basic electrical signals.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
This inline adapter allows you to tow a trailer with a 4-flat connection without rewiring, and its compact plug-in design makes it simple to use. Typically made of durable plastic, it protects wiring from corrosion and is a low-cost fix for connector mismatches.
Part Number: 120-6-4
ADAPTORS
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more