Anyone know how to dismantle an electric door mirror? I need to replace the motor in my door mirror

Gobsh

Anyone know how to dismantle an electric door mirror?

I need to replace the motor in my door mirror

I've unclipped the mirror 

I've removed the swivel motor

Im trying to remove the back plate but I've never seen fixings like these so not sure how to release them? 

Any ideas?

It's a Peugeot 3008 2014

Bigwheels1111

3.30 sec in.

https://www.youtube.com/watch?v=0O-UsXH6FS4

Not hard but a pain.

Mildly_Miffed

Looks like you need to dismantle the halves of the shell further to get to clips holding the motor in.