I got mine fitted (hardwired) by my garage as they were helping to fit my DRLs from and back so got them to do it same time to save on costs
front: Nextbase 412GW
Back :Nexbase 112GW
Also agree with Ekona about trusting the garage to d the work honestly
Hi I have dash cams front and back in my Z so this helps to keep garage etc. in check Do you have dash cam on your Z ? another option perhaps starting from £50
http://www.halfords.com/technology/dash-cams/dash-cams . Not the most elegant solution but
Newer kit really good , I used a few months back and still looking great , sand down till headlights cloudy then spray , jib done 30mins labour job done :D