roof loom ribbon rear fuse box plug outputs

Hi all
Vectra SRI Estate 1.9 CDTI

Internal lights front and rear stopped working and now also getting the alarm going off at silly times with the following codes

B2955 - Anti Theft Warning System Sensor Datalink Circuit Low Voltage or Circuit Open
B2955 - Anti Theft Warning System Sensor Datalink no Communication

Had a look at fuses all look good and did a limited visual inspection of the roof ribbon loom (dropped one side of the headlining) but nothing obvious

I think it’s the roof loom...

roof loom ribbon rear fuse box plug outputs