How to Connect 6X9 Speaker Wires

Written by james clark
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How to Connect 6X9 Speaker Wires
A 6x9 car speaker connects with two colour-coded wires. (loud speaker image by Eray Haciosmanoglu from

The 6x9 car speaker is one of the most common sizes of loudspeaker available for installation in a car or truck. Because it is such a popular size, connections are almost universally standard with every make and model of vehicle stereo system. The 6x9 connects to a system with two colour-coded speaker wires, each terminating in a metal connector for a hookup that should take less than a minute. As with any wiring project, it's important to cut off the power while working on speakers. This involves disconnecting one of the power cables from the vehicle's battery.

Skill level:
Moderately Easy

Things you need

  • Wrenches
  • Pliers or wire crimping tool

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  1. 1

    Remove the battery cable connected to the negative (-) post on the vehicle battery by unscrewing the bolt on the cable clamp with a wrench. The clamp lifts straight off the battery terminal. It's important to leave this cable disconnected while hooking up and testing speakers to a stereo system already installed in a vehicle.

  2. 2

    Connect the positive and negative speaker wires from the stereo to the terminals on the back of the 6x9 speaker near the metal housing for the cone. Each terminal should be labelled + for positive and - for negative, but if not, the negative terminal is slightly smaller than the positive. Slip the connector on the end of the red (positive) speaker wire onto the positive terminal post on the speaker. The connector on the other wire attaches to the negative terminal.

  3. 3

    Wiggle the speaker-wire connector at the point where it attaches to the speaker to verify a secure fit. If the wire feels loose or comes off the speaker easily, slip it off the terminal and crimp the connector on the end of the wire gently with pliers, then reattach to the speaker terminal.

  4. 4

    Reconnect the negative cable to the car battery to test operation of the speaker by turning on the stereo and adjusting the volume. Disconnect the battery cable to hook up additional 6x9 speakers.

Tips and warnings

  • Do not reconnect the negative power cable to the battery terminal until all speaker wire connections are complete.

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