The Honda Acty may be practical and reliable, but most models—especially older HA3, HA4, HA6, or HA7 variants—lack modern conveniences like a 12V power outlet or USB charging port . Whether you want to power a GPS, charge your phone, or run a dash cam, installing an accessory outlet is one of the easiest and most useful upgrades you can do.

Here's how to safely wire in a 12V socket or USB charger to your Acty.

🔧 What You'll Need:

• 12V accessory socket or USB charging port (panel-mount style preferred)

• Inline fuse holder and 10A fuse

• 14–16 gauge wire (black and red)

• Ring terminal connectors (for ground)

• Crimp connectors or heat shrink butt connectors

• Drill and hole saw (if panel mounting)

• Wire stripper/crimper tool

• Multimeter (for testing power and ground)

• Zip ties or cable organizers

⚙️ Step-by-Step Installation

1. Choose Your Mounting Location

Common locations include:

• The center dash panel

• Below the steering column

• On the side of the center console (if equipped)

• Inside the glove box (for hidden installs)

Use a 1" hole saw or step bit to drill the mounting hole if necessary. Test-fit the charger or outlet to ensure a snug fit.

2. Find a Power Source (Switched or Constant)

You have two wiring options:

• Switched power : Taps into a circuit that's only on when the key is turned (ideal for dash cams or chargers that shouldn't drain the battery).

• Constant power : Always on, even with the key off (better for camping accessories or refrigerator plugs).

Use a multimeter to probe the fuse box or ignition wiring. For a cleaner job:

• Tap into an accessory fuse using an Add-a-Fuse adapter.

• Or, run a fused wire directly from the battery positive terminal .

3. Wire the Socket or USB Charger

• Red wire → 12V positive (through inline fuse if going directly to battery)

• Black wire → chassis ground (bolt it to a clean, bare metal surface)

If panel-mounting, push the outlet into place and secure it from the rear with the nut or clips included.

4. Secure Everything

Use zip ties or cable sleeves to keep wires tidy and away from moving pedals or steering linkages. Double-check that your connections are crimped tight and fused correctly.

5. Test the Setup

Turn the key (if you chose switched power) and plug in a device or USB cable. Confirm voltage with a multimeter or indicator light.

🔋 Pro Tips

• Use a fuse rated 5A–10A depending on what you plan to run—phones use little, but refrigerators or compressors may need more.

• For multiple devices, install a dual USB + voltmeter combo panel .

• If running direct to the battery, always fuse close to the battery terminal to prevent shorts.

✅ Why is it worth it?

Adding a 12V or USB outlet turns your Honda Acty into a more modern, daily-drivable rig—ideal for road trips, work commutes, or camping setups. The total cost is usually under $25 and the installation takes about 30–45 minutes with basic tools.