Roadmaster 789 Smart Diodes – 2 Pack | For Variable Voltage LED Tail Lights | RV to Flat Towed Vehicle Connection
Roadmaster 789 Smart Diodes – 2 Pack | For Variable Voltage LED Tail Lights | RV to Flat Towed Vehicle Connection is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Description and Details
Description and Details
The Roadmaster 789 Smart Diodes (2-Pack) make it easy to safely connect your RV to a flat-towed vehicle equipped with variable voltage LED tail lights. Designed to prevent electrical feedback, these smart diodes protect both your motorhome and towed vehicle’s electrical systems while maintaining proper lighting operation during towing.
Engineered with aluminum heat sinks for superior heat dissipation and epoxy-sealed cases for moisture and vibration resistance, the Roadmaster 789 diodes deliver reliable performance and long service life. The kit simplifies installation and provides clean, consistent signal transmission for tail light and brake light operation—ideal for vehicles with modern LED lighting systems.
Key Features:
-
Brand: Roadmaster
-
Model: 789 Smart Diodes
-
2-Pack for RV to flat-towed vehicle connections
-
Designed for variable voltage LED tail light systems
-
Prevents electrical feedback and system damage
-
Aluminum heat sink for enhanced cooling
-
Epoxy-sealed case for vibration and moisture resistance
-
Compact, durable, and easy to install
-
Maintains safe and consistent lighting function while towing
Applications:
✔ For RV to flat-towed vehicle lighting connections
✔ Compatible with variable voltage and LED lighting systems
Ensure safe, reliable lighting while towing with the Roadmaster 789 Smart Diodes—precision-engineered for modern LED-equipped vehicles.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product Disclosure – Scenic City Supply
Scenic City Supply is an independent liquidation company. We are a secondary seller of products and are not affiliated with, sponsored by, or authorized by any product manufacturer. All trademarks, brand names, model numbers, and logos mentioned are the property of their respective owners and are used strictly for identification and compatibility purposes.
Scenic City Supply’s inventory comes from multiple sources, including but not limited to surplus, liquidation, closeouts, overstock, and insurance-loss merchandise. All products are new, OEM, and unused unless otherwise stated. As a liquidator, some items may show cosmetic imperfections such as tarnish, discoloration, or minor surface wear. These conditions do not affect the function, performance, or integrity of the product.
Packaging may be damaged, show signs of storage, or be replaced for safe delivery. The sale of this product by Scenic City Supply is not subject to the policies of the manufacturer. Any warranty offered by the manufacturer is not available to you as the purchaser. Any applicable warranties or guarantees will be disclosed in writing at the time of sale.
Every item is opened and inspected prior to shipment to confirm quality and accuracy. If you are not fully satisfied with your purchase, you may return it within 30 days in its original packaging for a full refund.

