12V/24V Diesel Parking Heater Wiring Harness – Webasto Fit

12V/24V Diesel Air Parking Heater Wiring Harness Cable Adapter

Keep your diesel air parking heater running reliably with this purpose-built wiring harness. Designed to connect your heater's motherboard, LCD control panel, fuel pump, and external power supply into one clean, organized loom — compatible with both round and triangle connector control panel plugs used in Webasto, Eberspacher, and similar aftermarket diesel air parking heater systems.

Whether you're upgrading your camper van, truck cab, boat, or off-road rig, this cable adapter provides a secure, plug-and-play electrical connection for dependable heater operation in cold weather. Available in black or white.

Made in Mainland China.

Key Specifications

• Voltage Compatibility: 12V & 24V systems
• Total Cable Length: Approximately 2 meters
• Connector Types: Round plug & Triangle plug (two variants available)
• Color Options: Black or White
• Compatible With: Webasto, Eberspacher, and most aftermarket diesel air parking heaters
• Connects: Heater motherboard, LCD switch/control panel, fuel/oil pump, external power supply

⚠️ Important – Check Your Plug Type Before Ordering

This wiring harness is available with either a round or triangle control panel plug. Please carefully inspect the plug shape on your existing control panel and switch before placing your order. An incorrect plug type will not fit your heater. Pay close attention to both the shape and color of your connector.

What's in the Box?

• 1 × Diesel Parking Heater Wiring Harness / Power Supply Cable Adapter

Who Is This For?

This harness is ideal for:

• RV, camper van, and caravan owners
• Truck and lorry drivers who rely on cab heating
• Marine and boat enthusiasts with diesel heating systems
• Off-road and overlanding builds
• DIY mechanics replacing a damaged or faulty wiring loom

Helpful Resources

For guidance on safe vehicle electrical wiring practices, visit the OSHA Electrical Safety Resource Center.

Related Products You May Like

• "Everything Is Fine" Funny Men's Graphic T-Shirt | Cotton Tee

Frequently Asked Questions

Q: Is this wiring harness compatible with both 12V and 24V diesel parking heaters?

A: Yes, this cable adapter is designed to work with both 12V and 24V diesel air parking heater systems, making it suitable for a wide range of vehicles including cars, trucks, vans, RVs, and boats.

Q: How do I know which plug type (round or triangle) I need?

A: Before ordering, physically inspect the connector on your heater's existing control panel or LCD switch. The plug will be either round or triangular in shape. Selecting the wrong style will result in an incompatible fit, so double-check both the shape and the color of your current plug.

Q: What components does this wiring harness connect?

A: This wiring harness loom is designed to connect your diesel parking heater's main motherboard/controller, LCD control panel or switch, fuel (oil) pump, and external 12V or 24V power supply — providing a complete, organized wiring solution in approximately 2 meters of cable length.

Q: Is this harness compatible with Webasto and Eberspacher heaters?

A: This harness is compatible with Webasto, Eberspacher, and most aftermarket diesel air parking heaters that use either a round or triangle control panel plug. Always verify your connector type and voltage before purchasing.