Where is the factory amp in a 2005 Chrysler 300?
In most 2005 Chrysler 300s equipped with the premium Infinity or Harman Kardon sound system, the factory amplifier is mounted in the trunk on the right-hand side behind the interior trim panel. Base models typically do not have a separate amplifier; power is provided by the radio or a compact internal amp. This article explains where to look and how to identify your setup.
Understanding the 2005 Chrysler 300 audio options
Chrysler offered several audio configurations in the 2005 300, ranging from a standard six-speaker setup to premium surround-sound systems. The presence and location of a dedicated amplifier depend on the chosen package. The premium systems include external amplification and a subwoofer, while base configurations rely on integrated amplification within the radio or a minimal amp assembly.
Premium sound amplifier location
The dedicated amplifier for premium systems is typically mounted in the trunk, most often on the right side behind the side panel. The unit is a rectangular metal enclosure connected by several wiring harnesses to the head unit, speakers, and subwoofer (if equipped).
Before you begin: Tools and safety: disconnect the battery, wear gloves, and avoid short circuits when handling wiring.
To locate the amp in the trunk, proceed as follows:
- Open the trunk and examine the right-hand side wall behind the carpeting for a small access panel or trim piece.
- Remove the panel using a trim tool to expose the amplifier mounting bracket and the attached wiring harnesses.
- Look for branding (Infinity or Harman Kardon) on the amp cover and note the number of connectors.
- Trace power and signal wires to confirm it is the main amplification module for the speakers.
Conclusion: In the premium Infinity/Harman Kardon systems, the amplifier is located in the trunk on the right side behind the trim. If you have a base system, you likely won't find a separate amp; amplification is handled by the head unit or a compact, integrated amp that is not a separate module you can easily service.
What if you have trouble finding it?
Not every 2005 Chrysler 300 uses the same layout. Some early production examples or different audio packages might place the amplifier elsewhere or integrate it into the subwoofer enclosure. If you still can't locate the amplifier, consult the service manual for your VIN or check the factory documentation that came with the car. A quick VIN-based lookup can confirm the exact audio package and component layout.
Why this matters for maintenance and upgrades
Knowing the amplifier location helps with troubleshooting, replacement, or upgrading the sound system. If you're replacing speakers or adding a new amp, the trunk-mounted unit is typically the starting point for premium systems, while base systems may require different wiring considerations. Always follow proper safety steps when working on electrical components in a vehicle.
Summary
In the 2005 Chrysler 300, the factory amplifier's location depends on the audio package. Premium Infinity/Harman Kardon systems generally place the amp in the trunk on the right side, behind trim. Base systems usually do not have a separate amp, with amplification handled by the radio or a compact internal module. When in doubt, consult the owner's manual or service documentation to confirm your specific configuration.
