72-8109 - Car Speaker Metra - Free user manual and instructions

Product Type	Speaker Wiring Adaptor
Brand	Metra
Model	72-8109
Purpose	Connect aftermarket speakers to factory vehicle harness
Compatibility	Universal for most vehicles with standard speaker connectors
Connector Type	Two black electrical connectors with red terminal connectors
Installation	Plug-and-play, no cutting or splicing required
Dimensions	Approximately 2 x 1 x 1 inches (5 x 2.5 x 2.5 cm)
Weight	Approximately 0.1 lbs (50 g)
Material	Plastic housing with metal terminals
Color	Black
Includes	1 adaptor, installation instructions
Power Handling	Passive device, no power handling capacity
Warranty	1 year limited warranty (typical)
Maintenance	Keep dry, avoid bending connectors
Safety	Disconnect vehicle battery before installation
Repairability	Non-repairable, replace if damaged

Frequently Asked Questions - 72-8109 Metra

What is the Metra 72-8109 used for?

The Metra 72-8109 is a speaker wiring adaptor that allows you to connect aftermarket car speakers to your vehicle's factory speaker harness without cutting or splicing wires.

Is the 72-8109 compatible with all vehicles?

It is designed to be universal for most vehicles that use standard speaker connectors, but compatibility may vary. Check your vehicle's speaker connector type before purchase.

How do I install the adaptor?

Step 1: Connect the adaptor wires to your new speaker (matching polarity). Step 2: Plug the adaptor into your vehicle's speaker harness. Ensure a secure connection.

Do I need any special tools for installation?

No special tools are required. The adaptor uses plug-and-play connectors, but you may need basic tools to remove door panels or interior trim to access the factory speakers.

What if the adaptor doesn't fit my vehicle?

If the adaptor does not fit, check if your vehicle uses a non-standard connector. You may need a different adaptor or a custom wiring harness.

Can I use this adaptor with any aftermarket speaker?

Yes, as long as the speaker has compatible wire terminals (typically spade connectors or bare wire). The adaptor wires can be crimped or soldered to the speaker.

Does the adaptor affect sound quality?

No, the adaptor is a passive component that simply connects wires. It does not affect sound quality as long as connections are secure and polarity is correct.

What is the polarity of the wires?

Typically, the red terminal is positive (+) and the black terminal is negative (-). Always match the polarity of the adaptor wires to your speaker terminals.

How do I clean the adaptor?

Keep the adaptor dry and clean with a soft, dry cloth. Avoid using liquids or cleaners that could damage the plastic or connectors.

Is there a warranty for the 72-8109?

Most Metra products come with a 1-year limited warranty against defects. Check with your retailer for specific warranty terms.

USER MANUAL 72-8109 Metra

Speaker Wiring Adaptor

IMPORTANT

Before starting, compare items on your invoice with items received. Thoroughly check packing materials. If an item is missing, please call Crutchfield at 1-888-955-6000.

120728109

REVISION 09/21/2020

STEP 1 -- CONNECT WIRES

Connect wires to new Speaker as shown (Inset).

STEP 2 -- INSTALL

Plug Speaker Wiring Adaptor into vehicle speaker harness.

Two black electrical connectors with red terminal connectors, shown from different angles (no text or symbols visible)

Connect to Vehicle Speaker Harness