Vauxhall Astra 2011.5 Owner's Manual page 186

Fold down the blind and remove.
Remove the cover.
Fuse assignments
Vehicle care
No. Circuit
1 Trailer module
2 Trailer outlet
3 Parking assist
4 –
5 –
6 –
7 –
8 Anti-theft alarm system
9 –
10 –
11 Trailer module, Trailer socket
12 –
13 Trailer outlet
14 –
15 –
16 –
17 –
185