Vauxhall Insignia side light not working

You checked the sidelight fuse in the boot ?
Vauxhall Insignia (2008 – 2013) – fuse box diagram
Year of production: 2008, 2009, 2010, 2011, 2012, 2013

Engine compartment fuse box
The fuse box is in the front left of the engine compartment. Disengage the cover, lift it upwards and remove.

Vauxhall Insignia FL - fuse box - engine compartment
Vauxhall Insignia – fuse box – engine compartment
Number Circuit
1 Transmission control module
2 Engine control module
3 —
4 —
5 Ignition, Transmission control module, Engine control module
6 Windscreen wiper
7 —
8 Fuel injection, ignition system
9 Fuel injection, ignition system
10 Engine control module
11 Lambda probe
12 Starter
13 Sensor throttle heating
14 Lighting
15 Rear window wiper
16 Vacuum pump, mass air flow meter, water in fuel sensor, DC transformer
17 Ignition, Airbag
18 Adaptive forward lighting
19 Adaptive forward lighting
20 Fuel pump
21 Rear power windows
22 ABS
23 Variable effort steering
24 Front power windows
25 Power outlets
26 ABS
27 Electric parking brake
28 Heated rear window
29 Left power seat
30 Right power seat
31 Air conditioning system
32 Body control module
33 Heated front seats
34 Sunroof
35 Infotainment system
36 —
37 Right high beam
38 Left high beam
39 —
40 —
41 Vacuum pump
42 Radiator fan
43 Vehicle battery, DC transformer (only on vehicles with stop-start system)
44 Headlamp washer system
45 Radiator fan
46 Terminal 87, main relay
47 Lambda probe
48 Fog lights
49 Right low beam
50 Left low beam
51 Horn
52 Ignition
53 Ignition, ventilated front seats
54 Ignition
55 Power windows, mirror folding
56 Windscreen washer
57 —
58 —
59 Diesel fuel heating, emission control system
60 Mirror heating
61 Mirror heating
62 —
63 Rear window sensor
64 Adaptive forward lighting
65 Auxiliary pump (only on vehicles with stop-start system)
66 Rear window washer system
67 Fuel system control module
68 —
69 Battery sensor
70 Rain sensor
71 Battery sensor
Instrument panel fuse box
Vauxhall Insignia FL - fuse box - instrument panel
Vauxhall Insignia – fuse box – instrument panel
In left-hand drive vehicles, the fuse box is behind the storage compartment in the instrument panel. Open compartment, compress the locking tabs, fold compartment down and remove.

In right-hand drive vehicles, the fuse box is located behind a cover in the glovebox. Open the glovebox and remove the cover.

Number Circuit
1 Infotainment system, Info display
2 Body control unit
3 Body control unit
4 Infotainment system, Info display
5 Infotainment system, Info display
6 Cigarette lighter
7 Power outlet
8 Body control unit
9 Body control unit
10 Body control unit
11 Interior fan
12 —
13 —
14 Diagnostic connector
15 Airbag
16 Central locking system, tailgate
17 Air conditioning system
18 Transportation fuse
19 Memory
20 —
21 Instrument
22 Ignition
23 Body control unit
24 Body control unit
25 —
26 Power outlet load compartment
Load compartment fuse box
Vauxhall Insignia FL - fuse box - load compartment
Vauxhall Insignia – fuse box – load compartment
The fuse box is on the left side of the load compartment behind a cover. Remove the cover.

Number Circuit
1 Central locking system, Power tailgate
2 Trailer module
3 Trailer module
4 —
5 Trailer socket
6 Steering wheel heating
7 Rear power windows
8 Trailer socket
9 Sunroof
10 Central locking system, tailgate
11 —
12 Air conditioning system
13 —
14 —
15 Power tailgate lock
16 Air conditioning system
17 —
18 Power tailgate lock
19 Side obstacle detector
20 Side obstacle detector, venti‐ lated front seats
21 Active damping system, High beam assist, Cruise control, Traffic sign assistant, Lane departure warning, trailer module
22 Anti-theft alarm system
23 All-wheel drive, anti-theft alarm system
24 Sidelight left
25 Sidelight right
26 —
27 —
28 —
29 Trailer module, transportation fuse
30 Side obstacle detector
31 Active damping system, High beam assist, Cruise control, Traffic sign assistant, Lane departure warning
32 Side obstacle detector
33 All-wheel drive
34 Sunroof
35 —
36 –
37 —
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market

In the boot fuze compartment it doesn’t have fuzes 24 and 25, which should be sidelights left and right, also the rear lights work.

Try swapping the bulb holder and lamp with the side that is working .