How to Wire Accessories to Car Fuse Panels


Car accessories add function and convenience to your car. Additional interior lights, or LED under-car lights jazz up a plain vehicle. These components wire directly to the car's fuse box. So, in order to install them you must learn how to add a component to the existing electrical system already available in the car. Neon lights and additional interior components like extra lights each take a separate circuit right in the car's fuse box. It is simple to learn the process.

Things You'll Need

  • Accessory manual
  • Car fuse box
  • Wiring diagram
  • Circuit breaker (size depends on your accessory)
  • Screwdriver
  • Wire crimper
  • Locate the car fuse box which is normally behind the dashboard or inside the glove box.

  • Locate the amp rating for the accessory you are going to install. This is the amperage the accessory is rated for and it is only safe to use the accessory at or below this rating. Amperage ratings are listed in the accessories manual near the beginning of the installation section.

  • Install the appropriate circuit into the fuse box in the slot beside the connector you will use for the car. Any open slot on the fuse box will suffice.

  • Slide the accessory's connector pin into the car fuse box. If there is no connector pin, unscrew the fuse box connector screw with a screwdriver. Strip 1/2 inch of sheathing from the wire with a wire crimper tool. Slide the bare wire under the connector and tighten the screw.

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  • Photo Credit car fuses image by Witold Krasowski from
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