Roadmaster 789 Set of 2 Smart Diode fits RV to Flat Towed Vehicle Connections with Variable Voltage and LED Lighting | Easy Installation | Aluminum Heat Sink | Epoxy Case

• Product Compatibility: Roadmaster Smart Diodes fits RV to Flat Towed Vehicle Connections with Variable Voltage and LED Lighting
• Set Information: This set of Roadmaster Smart Diodes for RV to Flat Towed Vehicles Connections contains 2 diodes
• Cool Design: The Roadmaster Smart Diodes are constructed with aluminum heat sink to prevent overheating or failure
• Built to Last: The Roadmaster Smart Diodes are encased in epoxy to protect them from the harsh elements
• Made in the USA: Premium products, handcrafted by American workers, Roadmaster is a true American manufacturer that builds its products to last

Diodes are used to prevent the backflow of current to the electrical systems of the towed vehicle and RV. Without them, backfeed can destroy the computer module in either rig. Some newer towed vehicles use a multiplex wiring system, whereby multiple electrical signals may be sent down a single wire (brake and taillights, for example). The signals only vary by voltage. This is why Roadmaster often refers to these vehicles as having variable voltage lighting. If an ordinary diode is used in these applications, some taillight signals will not work. That's because the motorhome only sends 12 volt signals, but the towed car is expecting different voltages for different taillight functions. Smart Diodes receive the full 12 volts from the motorhome and modify the voltage in order to light up the correct taillight signals on the towed vehicle. Because Smart Diodes correctly modulate the voltage to activate only the intended circuit, the result is vehicle lighting that looks and functions as intended. Even if not required, they can still be used in place of regular diodes. This is beneficial as only 2 Smart Diodes are required per vehicle (traditional diodes require 4 for most vehicles).