head unit quad lock

Hi all, Newbie to the forum, so apologies in advance if something like this has already been posted, I did attempt to find a similar thread but to no avail! Anyways, I'm going to be installing an underseat amp/sub in my T6 in the next few weeks and Im looking for help with the quad lock...

I have fitted rear speakers and have run the cables through under the cab floor and they are currently dangling through fuse box access panel at the moment. I shall (hopefully) get them connected tomorrow but first I'll need to remove the head unit (Discover sat-nav). Any pointers or tips on how...

Just got a standard van (startline) what trype of head unit is fitted? they all look the same!! can I add vw parking sensors to it or should I just buy a standard kit? is there any thing else I can activate or add to it? thanks Elliott

Hi peeps anyone taken one of these headunit out yet? Got some new speakers to fit. I've heard you pop the front off? Any tips. Ta ;)