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Small black plastic box with wire harness connectors visible

METRA

METRA AXDI-GMLN11 radio wire harness interface car amplifier

SKU CH-2AB5-33B11

Radio wire harness interface retains accessory power, chimes, fade and balance while providing NAV outputs for non-amplified or analog amplified vehicles

  • TypeAmplifiers
  • Provides accessory power with 12-volt 10-amp output
  • Retains Retained Accessory Power for continued convenience
  • Supplies NAV outputs for parking brake reverse speed sense
  • Keeps chimes audible through onboard speaker
  • Includes pre-wired ASWC-1 harness for steering control integration

Interface for non-amplified

The AXDI-GMLN11 connects an aftermarket radio to compatible General Motors vehicles without a factory amplifier or when bypassing one. It supplies a 12-volt 10-amp accessory lead and retains Retained Accessory Power so the radio stays on after the key is removed. Fade and balance controls remain functional through the harness. The module is designed for installers who need a clean integration without replacing the entire wiring loom.

Sustained operation with onboard chime speaker

Under continuous use the interface delivers steady accessory current up to the rated 10 amps while the onboard speaker reproduces vehicle chimes without external amplification. The pre-wired ASWC-1 lead supports steering-wheel control modules sold separately, allowing long drives without loss of convenience features. Heat dissipation is handled by the compact enclosure measuring approximately 8 inches long, 3.2 inches wide and 2.5 inches high.

Wiring-level integration limits

The harness provides navigation outputs for parking-brake, reverse and speed-sense signals, but it does not generate audio amplification or digital signal processing. Vehicles with factory digital amplifiers or fibre-optic networks fall outside its compatibility. The package weighs roughly 1 pound and 3.98 ounces, reflecting a passive interface rather than a powered amplifier chassis.

Highlights

  • Provides accessory power with 12-volt 10-amp output
  • Retains Retained Accessory Power for continued convenience
  • Supplies NAV outputs for parking brake reverse speed sense
  • Keeps chimes audible through onboard speaker
  • Includes pre-wired ASWC-1 harness for steering control integration

Specifications

TypeAmplifiers

Questions about this item

How much heat or noise does the AXDI-GMLN11 generate when running all day?

The AXDI-GMLN11 is a passive wiring interface with no fan or moving parts, so it produces no audible noise and negligible heat during continuous operation.

What must I already own for the AXDI-GMLN11 to work in my vehicle?

You need a compatible non-amplified or analog-amplified factory radio system, plus the ASWC-1 steering-wheel control module if you want to retain those functions.

Will the AXDI-GMLN11 work alongside my older factory amplifier if I keep it?

The interface is designed for non-amplified or analog-amplified models or for bypassing a factory amplifier; it does not integrate with an active factory amp left in the signal chain.

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