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.

Truck-Lite · Electrical & Lighting
TRU33751R
In stock · ships from Knoxville
This is a red LED identification bar assembly kit with five .75-inch round lamps.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Universal fit
Designed for trailers over 80 inches wide requiring identification and two additional clearance lights; uses standard 3/4-inch mounting holes. The store inventory title 'LIGHT HARNESS 5LAMP' may indicate only the harness portion is sold separately—verify with vendor.
Part data verified against 3 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It serves as the three-lamp ID bar plus two additional marker lights required for trailers over 80 inches wide, providing DOT-compliant clearance and identification lighting. The kit includes hardwired lamps that mount in 3/4-inch holes and connect via .180 bullet connectors. It is typically replaced when individual lamps fail, lenses crack, or the wiring harness becomes damaged.
Part Number: TRU33751R
LIGHT HARNESS 5LAMP
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting