40HD20

The Metra 40-HD20 is a reverse-style antenna adapter engineered for select 2005+ Honda, Acura, Mazda, and Suzuki vehicles. Unlike standard aftermarket radio antenna adapters, the 40-HD20 is designed specifically for situations where an aftermarket antenna is being connected back into the factory OEM radio.

This adapter features a female Motorola™ connector with a blue antenna power wire on one end and a male Honda-style antenna connector on the other. The blue wire connects to the factory radio antenna turn-on lead to maintain proper powered antenna operation and AM/FM reception.

Features

• Reverse antenna adapter cable
• Designed for factory radio retention
• Connects aftermarket antenna to OEM radio
• Female Motorola™ connector
• Male Honda-style antenna connector
• Blue antenna turn-on lead included
• Plug-and-play installation
• Maintains factory AM/FM functionality
• OEM-quality molded connectors
• Designed for select Honda/Acura/Mazda applications

Specifications

• Product Type:
  • Reverse Antenna Adapter
• Vehicle Compatibility:
  • Select 2005+ Honda, Acura, Mazda & Suzuki Vehicles
• Connector Type:
  • Female Motorola to Male Honda-Style
• Installation Type:
  • Plug-And-Play
• Power Lead:
  • Blue antenna turn-on wire

Common Vehicle Compatibility

• Honda Accord (2008–2012)
• Honda Civic (2006–2011)
• Honda CR-V (2007–2011)
• Honda Pilot (2006–2011)
• Honda Ridgeline (2006–2014)
• Acura MDX (2005–2013)
• Acura TSX (2009–2014)
• Mazda3 (2010–2019)
• Mazda CX-5 (2013–2020)

(Exact compatibility varies depending on trim level and antenna configuration.)

Included In The Box

• 40-HD20 antenna adapter cable

Installation Notes

• Blue wire connects to antenna turn-on lead
• Designed primarily for factory radio retention applications
• Commonly used when replacing factory antenna assemblies
• Professional installation recommended