Plug-and-play kit | 12 V vehicle installation

  • IGNITION-SWITCHED +12 V / FUSED FEED

  • CONVERTER 12 V IN / 5 V OUT

  • CONTROL BOX (ESP32 inside)

  • SCREEN + BUTTON ASSEMBLY

01-0PREPARE SAFELY

Park, switch ignition off and follow the vehicle maker's
battery-isolation procedure and airbag waiting time before fitting.
Never touch hybrid/EV high-voltage circuits.
Inspect all supplied parts for damage before fitting. Keep
packaging and small parts away from children.

02-PLAN & REMOVE THE VENT

Remove the vent following the vehicle maker's instructions.
Check gauge fit; never force it. Mount in a dry position clear of
the driver's view, controls and airbags. Keep cables clear of
pedals, steering, sharp edges, moving parts and heat. Preserve
windscreen demisting.

03-WIRE THE POWER SUPPLY

RED = ignition-switched +12 V. Tap suitable cigarette-lighter
/ accessory-socket wiring with capacity for the kit. Some
sockets are permanently live: meter-test for power with
ignition on and no power after shutdown. Isolate power again
before wiring. A permanent feed can drain the battery.
Optional: use a compatible fuse tap on a suitable
ignition-switched circuit. Fuse-tap cable not included.
BLACK = ground / negative. Use a secure, verified chassis
earth point; do not assume a trim screw is suitable. Confirm
polarity before restoring power.
Fuse the added gauge feed close to the take-off, whether
splicing or using a fuse tap. Use the kit-specified rating; if none
is supplied, contact us. Never increase an existing vehicle fuse
rating.
Use insulated automotive connections and strain relief; no
exposed copper. Never tap airbag, ABS or steering circuits. Use
the supplied converter, never a 24 V supply.

04-CONNECT THE LABELLED LEADS

With power isolated, match the two screen connectors and
button connector to their control-box labels. Check orientation
and seat fully. Never force, swap or connect leads with power
on.
Plug the converter's USB-C lead into the control box's
accessible ESP32 power socket. Never feed 12 V directly to
the ESP32, screen or button. Keep both cases closed.
With ignition off, securely plug the included Bluetooth/BLE
ELM OBD2 adapter into the diagnostic socket, clear of pedals
and the driver's legs.

05-MOUNT & SECURE

Clean and dry the surface. Peel the double-sided tape backing
and press the control box firmly into place. Add restraint if
needed. Secure the converter and cables. Fit the gauge
securely in the vent with its intended mount. Leave slack at
connectors; avoid pinching wires. Refit trim and check retention.

06-POWER ON & CHECK

Restore power following the vehicle maker's procedure. While
parked, switch ignition on. First start: allow up to 3 minutes to
find and connect to the ELM adapter. A pulsing Ghost logo
appears while connecting; the gauge display starts once
connected.
Later starts: the gauge remembers the adapter and normally
reconnects in under 30 seconds. Check vehicle readings,
mountings and cable clearance.
Switch ignition off: confirm the gauge turns off after any
shutdown delay. If it stays on, recheck the feed. The OBD2
adapter may stay powered independently; follow its
storage/removal instructions.

SAFE USE:

Operate menus only while stationary. The gauge is a supplementary display; retain and obey the vehicle's original instruments and
warnings. Stop using it and isolate power safely if there is damage, unusual heat, smell or smoke. Do not bypass a repeatedly blowing fuse.

CASES & WARRANTY:

Do not open the control box or screen case. Damage caused by tampering, modification, incorrect wiring or misuse may be
excluded from an applicable commercial warranty, subject to local law. Your statutory consumer rights remain unaffected.