anyone fitted a 2007 model head unit into a vauxhal signum 2003 with stearing wheel controls. as i have just brought a avic-d3 pioneer head unit and took it to place to get fitted and the iso lead i had didnt work (pc99-x06) from autoleads. i have just got a (pc99-x45) but this is for the vectra as thought might work so will have to see if that does on monday.if anyone had fitted something similar and got an iso lead that works i would be very pleased to hear what you have.