How to Install a Car Amp On-Off Switch

Written by chris shultz
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How to Install a Car Amp On-Off Switch
Install an on-off switch for your car amplifier. (subwoofer image by MATTHIEU FABISIAK from Fotolia.com)

Including an amplifier in your car stereo is necessary for a loud, powerful sound. However, there are times when you may not want the boot to be rattling away and need a convenient way to turn off the amp. An on-off switch is the perfect solution.

Skill level:
Moderate

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Things you need

  • 12 volt DC switch
  • 16 gauge wire
  • Electrical tape
  • Wire strippers

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Instructions

  1. 1

    Purchase a 12-volt DC switch to be used in the car. Most electronics and car audio stores have these.

  2. 2

    Take out the head unit of your stereo. Locate the blue remote wire running from your amp. The remote wire is generally 16 gauge wire.

  3. 3

    Cut and splice plenty of wire using wire strippers, so that you can easily run your switch wherever you want it. Longer is better, as it can always be trimmed down later.

  4. 4

    Attach your wire to the amp, switch and head unit. It will generally be AMP--Switch--Head Unit. The switch should have instructions, so check these first. These can be secured with electrical tape, or soldered and then secured with tape.

  5. 5

    Install the switch into the floor, dashboard, or anywhere it can be conveniently accessed. Mount it according to the instructions provided with the switch.

  6. 6

    Test your switch before putting the head unit back in. If the switch turns off the amplifier, the switch works.

Tips and warnings

  • Make sure to get a 12-Volt DC switch. Any other puts you at risk of starting a fire. It may also be smart to talk with the people at the electronics store to make sure your chosen switch will do the job.

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