OK.. So I couldn't pop out the facia around the dimmer switch.. Without marking the suede. So went in behind the stereo instead, as I have no stereo.. Lolz..
Didn't connect the Stabiliser or ground it. Tested and all worked.. So just threw some heat shrink on the stabiliser to make sure it wouldn't ground anything out.
All installed, and a big thanks to everyone for taking the time to give advice..
Next on the list is folding mirrors..
Just to confirm this, I got my kit today, it came with English instructions and it says to cover the stabiliser in electrical tape and don't screw down. So you shouldn't have any issues.