Coco

The wiring looms used are not specific to a particular vehicle. There may be another variant that uses these unused connectors, but not yours. For the reversing lights check the switch

Mine does this when any of the doors are not fully closed and the vehicle is moving. Check that the doors close as they should, the switches operate properly and the light goes on and off as it should

Check first that you have the switches on your brake pedal & clutch pedal - you need both of these to be able to proceed. You then need to obtain the switch and then have it activated by a dealer or someone with Planet. I've done it on my '04 Partner and it works

Is the Lexia still for sale please?