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Knox Trailers · Electrical & Lighting
GRT01-6627-H8
In stock · ships from Knoxville
This is a Grote adapter harness for dual-function LED lighting, most commonly used to convert between 3‑wire and 5‑wire stop/turn/tail circuits on heavy‑duty trucks and trailers.
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.
It lets you connect a combined brake/turn lamp to a vehicle that has separate turn signals, or adapt a 3‑wire vehicle to a lamp that needs a dedicated ground and separate circuits — all without cutting or splicing factory wiring. Typical replacements happen during LED retrofit installations when the factory harness doesn’t match the new light’s pinout.
Part Number: GRT01-6627-H8
ADAPTER HARNESS
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
