Demco 4‑Diode Universal Taillight Wiring Kit (9523010)

A versatile wiring harness kit designed to let you safely flat‑tow a vehicle by wiring its taillight circuit through the tow vehicle. This universal kit uses a 4‑way flat connector and built‑in diodes to prevent electrical backfeed and preserve the towed vehicle’s original wiring — making it a reliable, plug‑and‑play solution for many cars, SUVs, and light trucks.

Features

• 4‑diode wiring kit that taps into the towed vehicle’s tail, brake, and turn signal circuits while isolating its battery — avoids backfeed.

• Includes a standard 4‑way flat connector for quick hookup to your tow‑vehicle wiring.

• Universal fit — works with most cars, SUVs, and light trucks with standard lighting circuits.

• Durable wiring harness designed for reliability during towing; built to meet towing requirements for flat‑tow applications.

• Simple installation — minimal modification required, making it convenient for DIY installation or quick hookup before a trip.

Why Choose This Wiring Kit

This kit is an easy, cost‑effective way to ensure that your towed vehicle’s lights function properly while flat‑towing behind an RV or motorhome. The built‑in diode protection keeps the towed vehicle’s electrical system isolated — preventing battery drain or electrical issues. Its universal design means fewer worries about vehicle‑specific wiring configurations, making it a go-to option for owners who tow different vehicles over time or who prefer a plug‑and‑play setup.

Fitment / Specs

• Part Number: 9523010

• Connection Type: 4‑way flat connector

• Wiring: 4‑diode harness — maintains proper tail, brake, and turn signal operation while isolating vehicle battery

• Intended Use: Flat‑towing (dinghy towing) of cars, SUVs, light trucks behind RV or tow‑vehicle

• Compatibility: Most vehicles with standard taillight wiring circuits (tail, brake, turn)

• Installation: Simple – taps into existing light circuits; minimal drilling or modifications required

• Included Components: Wiring harness with 4‑way connector, diode assembly, mounting/connection hardware (as specified by manufacturer)