A little issue I didn't think of on rear is mine has auto headlamp adjust and aftermarket doesn't have the bracket to attach an arm to, you'll need to get one welded to make 100%
Though to be honest the arm doesn't seem to do anything and the sensor is fixed to another part of the car and doesn't move at all?
I've not got round to welding a bracket yet due to being summer and when I've tested the light they still level out anyway
Someone might know the reason for the odd set up, cough, Brett
Mine is type s not sure if this is the same on all models