How Long is the Wiring Harness on the Heavy-Duty Magnetic Tow Light Set 337TL257M?

Updated 09/15/2026 | Published 09/10/2026

Products Featured in This Question

Heavy-Duty Magnetic Tow Light Set - Red Incandescent - 30' Harness with 4-Pin Round Plug

(55)

$77.65

Question:

Will the wiring on the lights reach the back end of our 20’ travel trailer?

asked by: Still

Expert Reply:

They sure will! The Heavy-Duty Magnetic Tow Light Set item # 337TL257M has a 30' long wiring harness so you'll definitely be able to use them with a 20' long trailer. It uses magnets in the base of the lights to secure to your trailer.

The Heavy-Duty Magnetic Tow Light Set item # 337TL257M includes two incandescent lights, 30' wiring harness, a 4-way round trailer socket, and carrying case. This kit is designed to display your tow vehicle's brake and turn signals on your trailer.

Please note that the Heavy-Duty Magnetic Tow Light Set item # 337TL257M only works with a 4 round connector.

What kind of trailer are you pulling and what tow vehicle do you have?

expert reply by: Jerred H