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TOYOTA COASTER · LIGHT KIT INSTALLATION

JULY 2026, Version 2

Which kit does this guide apply to?

This installation guide covers the mixed-mount (front external, rear internal) SafeBus School Bus Light Kit for the Toyota Coaster, compliant in every Australian state and territory except NSW and Tasmania. Pick your state below to view and order the correct kit.

FRONT: External mount · REAR: Internal mount

Toyota Coaster (2017+)

School Bus Light Kit — Installation Guide

Before you start

Read every step in full before beginning any wiring or drilling.
Disconnect the battery negative terminal before making any connections.
Two-person job recommended when feeding the loom through the headlining and A-pillar.
Always verify door-sensor polarity (Section 2.4) with a multimeter before connecting — incorrect polarity will not trigger the warning lights correctly.

Kit items

SB003 Front Wig-Wag lights
SB001B Rear Wig-Wag lights
LCM100 Electronic control box
SBKIT1 Complete loom
SB7718 Front signage
MC3040 Rear signage
Dash switch
Door sensor assembly

Tools & materials

18–20mm hole saw
Wire strippers & terminal crimper
Cable ties
Trim removal tool
Multimeter (polarity check)
Supplied 2-pin & 3-pin connectors

Package Contents

SB003 Front light

SB001B Rear light

LCM100 Control box

Dash switch

SCHOOL BUS sign

Mother & child sign

SBKIT1 — Loom

RELAY — Coaster relay

Suggested cable runs

Suggested cable run diagram showing main ceiling loom, switch wiring and door sensor wiring routes with legend

Coaster interior line diagram showing main loom, door sensor wiring and illuminated control switch routing — Fig. 1 — Interior loom & switch wiring routes

Tip: to make loom installation easier, cut it at the white tag markers, feed it through the bus, then rejoin using the supplied 3-pin connectors.

Signage & lights

1.1 — Front signage & lights

Remove the black plastic trim above the windscreen, see Fig 2.
Cut the SCHOOL BUS sign in half & stick it to the two halves of the black trim
Attach the SB003 front lights on either side of the SCHOOL BUS signage, mounting them within 100mm of the sign. First attach the mounts with 4 screws and then fasten the black frame with the supplied M6 screws. Drill a hole for the light cables through the plastic trim.
Run the cables from the lights through the black rubber grommets above the windscreen.
On the inside of the bus, remove the climate vent above the driver. Locate the light cables that were inserted through the grommets and pull them through.
Use the supplied 2-pin connectors to connect the lights to the main loom (see Step 2 for loom runs)

Windscreen header trim removed showing rubber cable grommets either side — Fig. 2 — After removing plastic trim above windscreen, run cables through these grommets

Toyota Coaster front view with SCHOOL BUS sign and lights fitted, external mount — Fig. 3 — Sign & lights fitted, front view

1.2 — Rear signage & rear lights

As there are barn doors at the back of the Coaster, cut the decal to the right of the foot of the larger figure on the decal & attach on the right side of the bus (driver's side). See Fig. 4 for reference
Stick the lights on the inside of the rear glass, making sure that both lights are no more than 100mm away from the decal & the same distance to the decal. The right side light will fit comfortably in the small panel, see Fig 4 for reference.
Right light: run the cable inside the trim around the window. Left light: open the right barn door and remove the lower door trim and blue plastic. Drill 3 holes as per Fig 5. Stick the light to the glass & run cables inside the door frame and then through to the bus.
Connect the lights to the main loom using the supplied 2-pin connectors

Rear of Toyota Coaster showing child-safety decal centrally mounted, internal mount — Fig. 4 — Rear decal placement, barn doors

Wiring

Tip: Refer to Fig 1 for additional information on suggested cable runs before starting

2.1 — Front to back

Remove the plastic trim around the glove box and A-pillar moulding.
Run the loom from the top of the A-pillar to the rear of the bus through the headlining or air vents. This is typically the point where the loom is cut and rejoined with the 3-pin connectors.
At the rear of the bus, the loom may also be cut to ease passage through to the rear lights

2.2 — Glove box area

Below the glove box, connect the black GND wire to ground.
One power option is below the glove box. Connect the red +V wire to a fuse in the fuse box. Check with a multimeter for ignition power.
Connect the supplied 6-way connector to the switching box.

2.3 — Switch

Using an 18–20mm hole saw, cut a hole in the dash and insert the supplied switch. See Fig 6 for suggested position
Connect the switch to the grey connector

Dash photo showing illuminated control switch location — Fig. 6 — Switch location on dash

2.4 — Door sensor

The door sensor is connected via the supplied relay. Connect the black wire to ground and run the twin core cable to the light near the swing/concertina door footwell. Connect the red wire to one side of the light and the black wire to the other side.

Reference — flashing controller wiring

Wire	Function
Red	Positive
Black	Ground
Yellow	Left light
White	Right light
Brown	Door sensor — negative
Green	Door sensor — positive

SafeBus LCM100 flashing light controller wiring diagram with wire colour legend — Fig. 7 — Control box wiring reference

SafeBus · 1300 391 848 · safebus.com.au

For professional installation only

Toyota Coaster (2017+) mixed mount installation guide

Toyota Coaster (2017+)