[Lifetime Warranty] Car Radio Wiring Harness Connector - for Ford F150 1999-2004 F250/F350 1999-2004 Mustang 2001-2003 Mercury Grand Marquis 1998-2002
Car radio wiring harness connector with multi-colored wires for Ford and Mercury vehicles.
Dimensional diagram of car radio wiring harness connector showing length, width, and pin layout measurements.
Car radio wiring harness connector for Ford and Mercury vehicles shown in an interior car dashboard lifestyle graphic.
Infographic showing color-coded copper wires and PVC jacket construction for car radio wiring harness connector.
Infographic showing durable plastic plug and metal contact blades of a car radio wiring harness connector.
Compatibility chart for car radio wiring harness connector for Ford, Lincoln, Mercury, and Mazda vehicles.
Four-step installation guide for car radio wiring harness connector for Ford and Mercury vehicles.
Happy family driving in a car with BlueStars branding for automotive wiring harness connectors.
Car radio wiring harness connector with multi-colored wires for Ford and Mercury vehicles.
Dimensional diagram of car radio wiring harness connector showing length, width, and pin layout measurements.
Car radio wiring harness connector for Ford and Mercury vehicles shown in an interior car dashboard lifestyle graphic.
Infographic showing color-coded copper wires and PVC jacket construction for car radio wiring harness connector.
Infographic showing durable plastic plug and metal contact blades of a car radio wiring harness connector.
Compatibility chart for car radio wiring harness connector for Ford, Lincoln, Mercury, and Mazda vehicles.
Four-step installation guide for car radio wiring harness connector for Ford and Mercury vehicles.
Happy family driving in a car with BlueStars branding for automotive wiring harness connectors.
Lifetime Warranty

[Lifetime Warranty] Car Radio Wiring Harness Connector - for Ford F150 1999-2004 F250/F350 1999-2004 Mustang 2001-2003 Mercury Grand Marquis 1998-2002

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Car Radio Wiring Harness Connector - for Ford F150 1999-2004 F250/F350 1999-2004 Mustang 2001-2003 Mercury Grand Marquis 1998-2002

Key Features

  • Enables installation of an aftermarket radio using existing factory wiring
  • Plugs directly into the vehicle's factory harness without cutting wires
  • Standardized color-coded wires for a simplified connection to the aftermarket radio
  • High-conductivity 18-gauge copper wiring
  • Durable molded plastic connector for a secure fit

Replaces / Cross-Reference Part Numbers

  • 70-1771
  • BHA5700

Compatibility & Fitment

  • Ford:
    • Crown Victoria (1998-2002)
    • F-150 (1999-2004)
    • F-250 / F-350 / F-450 / F-550 (1999-2004)
    • Mustang (2001-2003)
  • Lincoln:
    • Town Car (1998-2002)
  • Mercury:
    • Cougar (2001-2002)
    • Grand Marquis (1998-2002)
  • Note: Designed for standard audio systems. Not compatible with factory-amplified or premium sound systems.

When to Replace

  • When installing a new aftermarket stereo head unit
  • To repair a damaged or cut factory radio wiring plug
  • To reinstall a factory radio after an aftermarket unit was improperly installed by cutting the harness

Installation Tips

  • Disconnect the vehicle's negative battery terminal before starting.
  • Match wires by function from this harness to the harness supplied with your aftermarket radio.
  • Use crimp connectors or solder and heat shrink for secure, lasting connections.
  • Confirm all speaker, power, and accessory functions are correct before reassembling the dashboard.
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  • PURE COPPER WIRE

    PURE COPPER WIRE

    Delivers strong performance and better overall sound
  • PVC JACKET & COLOR-CODED WIRES

    PVC JACKET & COLOR-CODED WIRES

    Protects wiring from harsh conditions and makes connecting wires quicker and easier.
  • STRONG PLASTIC PLUG

    STRONG PLASTIC PLUG

    Offers secure connections and withstands tough automotive environments
  • METAL CONTACT BLADES

    METAL CONTACT BLADES

    Ensure reliable power and signal transfer.

FAQ

This harness is listed for select Ford and Mercury vehicles, including Ford F-150 (1999-2004), Ford F-250 and F-350 (1999-2004), Ford Mustang (2001-2003), and Mercury Grand Marquis (1998-2002). Because radio wiring can vary by trim level, factory sound system, and whether the vehicle has premium or amplified audio, it is best to match the connector shape and pin layout to your original harness before ordering.
This part is used to connect the vehicle's factory radio wiring to the stereo-side wiring during a radio replacement or wiring repair. It helps route power, ground, speaker leads, and other radio circuits through the correct connector instead of cutting directly into the vehicle's original wiring.
Common signs include a damaged or melted radio plug, cut factory wiring from a previous stereo installation, loose radio connections, intermittent sound, speakers not working on one or more channels, or a replacement radio that cannot be connected cleanly to the factory wiring. If the original connector has broken locking tabs or corroded terminals, replacing the harness connector is often the better repair.
Installation is usually moderate in difficulty if you are comfortable removing interior trim and making wiring connections. Typical tools include trim removal tools, a Ford radio removal tool or dash disassembly tools depending on the radio style, wire strippers, crimpers or soldering tools, heat shrink or electrical tape, and a multimeter for verifying power and ground. For most vehicles, plan on about 30 to 90 minutes depending on dash access and whether any prior wiring repairs need to be corrected.
Before installation, disconnect the battery and inspect the factory radio cavity for cut wires, splices, corrosion, or signs of overheating. Verify whether the vehicle has a factory amplifier or premium sound system, since those setups can require different wiring solutions. It is also a good idea to confirm constant power, switched power, ground, and speaker circuits with a meter rather than relying only on wire color.
These connectors are commonly replaced after an aftermarket radio has been removed, when the original plug was cut off, or when poor splices cause heat buildup and terminal damage. They can also fail from bent pins, moisture intrusion, repeated radio removal, or overloaded circuits caused by incorrect stereo wiring. Using proper crimping or soldering methods and securing the harness behind the radio helps prevent future connection problems.