Axxess AXFD-5V 12V to 5V Step-Down Interface for Ford, Lincoln & Mercury Factory Amplifiers The Axxess AXFD-5V 12V to 5V Step-Down Interface is designed to solve factory amplifier turn-on issues when replacing an OEM radio with an aftermarket receiver in select Ford, Lincoln, and Mercury vehicles. This interface reduces the aftermarket radio’s 12-volt amplifier turn-on signal to the 5-volt signal required by many factory amplifiers, helping eliminate unwanted audio pops when the system powers on. The AXFD-5V provides a simple 3-wire installation that connects between the aftermarket radio amplifier remote turn-on output and the factory amplifier turn-on circuit. By delivering the correct lower-voltage trigger signal, it helps maintain proper factory amplifier operation during aftermarket radio upgrades. Designed specifically for vehicles with OEM amplified audio systems, the AXFD-5V is a compact solution for installers working with Ford-based factory sound systems. It can be used when an aftermarket receiver produces an audible turn-on “pop” through the factory amplifier and speakers. The AXFD-5V also supports USB update capability, allowing compatibility improvements and service updates when required. Whether completing a radio replacement, troubleshooting amplifier turn-on noise, or integrating an aftermarket receiver with a factory amplified system, the Axxess AXFD-5V provides a reliable voltage conversion solution for clean OEM amplifier integration. Key Features 12-volt to 5-volt step-down interface Designed for select Ford, Lincoln, and Mercury vehicles with factory amplifiers Converts aftermarket radio amplifier turn-on signal: 12V input 5V output Helps eliminate audible turn-on “pop” through factory amplifiers Simple 3-wire installation Designed for aftermarket radio installations Compatible with OEM amplified audio systems Compact design for easy installation USB updatable Ideal for: Factory amplifier retention Aftermarket radio upgrades Amplifier turn-on troubleshooting OEM audio integration