Car Accessories & Parts

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Add-a-Circuit Fuse Taps

Pull switched power from your fuse box without cutting any wires

Add-a-circuit fuse taps plug into your existing fuse box to give you a fused power source for dash cams, lights, or chargers. They let you add an accessory circuit without splicing into the factory harness, keeping the install clean and reversible.

We round up top-rated fuse tap options on Amazon in the common blade sizes so you can match your vehicle's fuse box. Confirm whether your slots use mini, standard, or low-profile fuses, and pick a tap that fits before you start the job.

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Popular add-a-circuit fuse taps

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What to look for

  • Correct blade fuse size
  • Holds two fuses
  • Includes lead wire
  • Fits your fuse box

FAQ

What fuse size do I need for a tap?
Fuse boxes use mini, standard (ATO), or low-profile blade fuses. Check your existing fuses or owner's manual before choosing a tap.
Should I tap a switched or constant circuit?
Use a switched circuit if you want the accessory to power off with the ignition. Use a constant circuit for devices that need power while parked.
How do add-a-circuit taps stay protected?
They hold two fuses, one for the original circuit and one for your new accessory, so both stay independently protected.