The Mach 460 sound system in Ford Mustangs is known for its powerful audio output, but wiring it can be challenging. This guide will help you understand the wiring process for the Mach 460 Ford factory amplifiers.

Understanding the Mach 460 System

The Mach 460 system consists of multiple components:

  • Head unit
  • Front amplifier
  • Two rear amplifiers
  • Speakers (including tweeters and woofers)

The system is designed to provide high-quality sound, with the amplifiers powering different speaker components separately.

Wiring Basics

When working with the Mach 460 system, keep these key points in mind:

  • The front amplifier handles high-frequency signals for tweeters
  • Rear amplifiers power the woofers for low-frequency sounds
  • Each amplifier requires proper power, ground, and remote turn-on connections
  • RCA inputs from the head unit provide audio signals to the amplifiers

Amplifier Connections

Front Amplifier

The front amplifier typically has these connections:

  • Power wire (usually red)
  • Ground wire (black)
  • Remote turn-on wire (blue/white)
  • RCA inputs for left and right channels
  • Speaker output wires for tweeters

Rear Amplifiers

Each rear amplifier will have:

  • Power wire
  • Ground wire
  • Remote turn-on wire
  • RCA inputs for left and right channels
  • Speaker output wires for woofers

Wiring Process

1. Disconnect the battery before starting any work.

2. Locate the factory amplifiers (usually under the rear deck or behind panels).

3. Identify all wires using a multimeter or wiring diagram.

4. Connect the power wire to the battery's positive terminal.

5. Ground each amplifier to a clean, unpainted metal surface.

6. Connect the remote turn-on wire to the head unit's remote output.

7. Run RCA cables from the head unit to each amplifier.

8. Connect speaker wires from amplifiers to corresponding speakers.

Common Wiring Issues

  • No sound from rear speakers: Check rear amp connections and RCA inputs.
  • Lack of bass: Ensure woofer connections are correct at the rear amps.
  • System doesn't turn on: Verify remote turn-on wire connections.

Aftermarket Head Unit Installation

When installing an aftermarket head unit:

  • Use a Metra 70-5511 or equivalent wiring harness adapter.
  • Ensure proper connection of RCA outputs to the factory amplifier inputs.
  • Connect the head unit's remote wire to the amplifier turn-on wires.

Tips for Successful Wiring

  • Always use a wiring diagram specific to your Mustang's year and model.
  • Label all wires before disconnecting to avoid confusion.
  • Use heat shrink tubing or electrical tape to insulate connections.
  • Double-check all connections before reconnecting the battery.

By following these guidelines, you can successfully wire the Mach 460 Ford factory amplifiers in your Mustang, ensuring optimal performance of your sound system.