Isuzu D-Max dashcam hardwire fuse guide (Australia)

Isuzu D-Max (3rd gen RG, 2020+). The interior fuse table labels circuits (ACC) and (+B) outright, which makes this one of the better-documented entries. Meter before trusting any of it.

Community-sourced, awaiting installer verification Data confidence: Medium Reviewed 2026-10-29 2020+
Verify before you tapVerify every fuse with a multimeter or test light before tapping. FuseMap AU is general information only: fuse layouts change by model year, trim, market and options, and we cannot guarantee any entry is right for your vehicle. Hardwiring is done at your own risk. FuseMap AU and its contributors accept no liability for damage, injury, voided warranties or loss arising from use of this information.
Fuse box location
Cabin box under the driver-side dash behind a removable plastic panel. This source covers D-Max 2011-2022, so confirm on an RG. [2]
Fuse type
Mini (the table lists every fuse, interior and engine bay, as 'Fuse MINI'). [1]
Constant (always-on)
#33 ROOM(+B); #27 AUDIO(+B); #39 ACC SOCKE(+B)
Ignition / ACC (switched)
#38 AUDIO(ACC); #37 KEY INT LOCK (ACC); #31 ELEC(ACC)

Core fields known: 4/4 (✓ Box location · ✓ Fuse type · ✓ Switched (ACC) slot · ✓ Constant slot). Known doesn't mean verified. See the evidence badges below.

Fuse box location and type

Location: Cabin box under the driver-side dash behind a removable plastic panel. This source covers D-Max 2011-2022, so confirm on an RG. [2] Reference table

Engine-bay box is separate.

Fuse type: Mini (the table lists every fuse, interior and engine bay, as 'Fuse MINI'). [1] Reference table

Scope of this data: Fuse table is for the 2020 RG. Box location source covers D-Max 2011-2022 (older generation too). Later model years not separately checked.

Constant (always-on) fuse candidates

Battery-direct slots: 12V with the ignition off. Use for the camera’s parking-mode (BATT) wire. Candidates only. Meter each one.

SlotRatingLabelEvidenceNotes
#33 ROOM(+B)5AROOM(+B)Reference tableInterior lights on battery feed. Low-risk constant candidate. [1]
#27 AUDIO(+B)15AAUDIO(+B)Reference tableAudio on battery feed. Use a small fuse in the tap. [1]
#39 ACC SOCKE(+B)15AACC SOCKE (+B)Reference tableAccessory socket on +B, so the socket is always live. Don't mix it with an ACC tap in the same slot. [1]

(+B) is the battery-direct label in this table.

Ignition / ACC (switched) fuse candidates

Slots that read 0V with the ignition off and ~12V when it’s on. Candidates only. Meter each one.

SlotRatingLabelEvidenceNotes
#38 AUDIO(ACC)5AAUDIO(ACC)Reference tableAudio-only supply with ACC in the label. Best-looking switched candidate. [1]
#37 KEY INT LOCK (ACC)5AKEY INT LOCK (ACC)Reference tableACC label but it's a key interlock, so prefer #38. [1]
#31 ELEC(ACC)5AELEC(ACC)Reference tableTable says 'protects several circuits', so avoid. [1]

'(ACC)' in the table is Isuzu's own label for the circuit. Still unverified on a real truck.

Slots to avoid

Gotchas for this vehicle

Engine-bay table lists an IBS (Intelligent Battery Sensor) fuse. On battery-managed vehicles, earth to a chassis bolt rather than the battery terminal, and use a kit with an adjustable low-voltage cutoff. [1]
The engine-bay table lists an ISS fuse. We could not confirm whether AU trucks have idle-stop, so test for dashcam restarts. [1]
Watch out: This is a third-party transcription of the manual, so read the label on your own fuse-box cover before trusting a number. [1]

How to verify before you tap (generic)

  1. Find the fuse box and its cover diagram. Use a multimeter or test light, with the black lead on bare chassis metal.
  2. Test both contacts on the top of each candidate fuse. Constant: 12V+ with the ignition off. Switched (ACC): 0V with the ignition off, 12V+ with the ignition on. Check again after the car has been locked a few minutes: some circuits stay live briefly.
  3. Don't put the ACC and constant wires in the same fuse slot. Use a fuse in the tap that suits the camera (typically 3–5A), and keep the tap the right way round so the fuse is fed from the supply side.
  4. Earth the black wire to a clean bare chassis bolt. Cable-tie the tap and wiring so nothing rattles loose.
  5. Check the dashcam on and off, and after the car sleeps. Look for warning lights, and for the vehicle waking or draining.

Generic method per the BlackVue hardwire kit manual and the BlackboxMyCar guide. Not specific to this vehicle.

Sources

  1. StartMyCar AU - Isuzu D-Max 2020 (3rd gen) fuse box page reference
    https://www.startmycar.com/au/isuzu/d-max/info/fusebox/2020/3rd-gen_gen-3
    Used for: Interior fuse table with ACC/+B labels and fuse types.
  2. Scegliauto - Isuzu D-Max fuse box location (video tutorial page) reference
    https://www.scegliauto.com/en/video/isuzu/tutorial/151693/
    Used for: Cabin box location (covers 2011-2022).

Why this confidence rating? A full AU-listed fuse table with explicit ACC and +B labels and fuse type. But it's a third-party transcription, nobody has meter-tested it, and the box location comes from an older-generation video.

Unverified leads. Don't rely on these.
  • An older-gen D-Max owner thread (newd-max.net) was behind a bot wall and not read.

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Verify before you tapVerify every fuse with a multimeter or test light before tapping. FuseMap AU is general information only: fuse layouts change by model year, trim, market and options, and we cannot guarantee any entry is right for your vehicle. Hardwiring is done at your own risk. FuseMap AU and its contributors accept no liability for damage, injury, voided warranties or loss arising from use of this information.