Hi All, I'm thinking of upgrading my stock ICE for an after market unit that has DVD, SAT NAV etc. fitted. I've noticed that a few other people in the UK have done this but would appreciate some advice as to how they did it, did they manage to tie in the steering wheel controls and did they have to buy connector units to tie into the orginal wiring? A lot of questions I know but I'm sure its cheaper doing it this way than trying to fit a new factory unit. Appreciate any guidance on this please.

Cheers