8:th-Feb-2015, 18:13:15
I'll look later but i'm pretty sure there is only one signal wire which is used to send commands from the buttons
Astra-J 2.0 CDTI S/S
Retrofitted AFL, TPMS, Navi950, BT, DAB, Rear Camera, Infinity sound system, Towbar, Flexfloor & more.
I can do programming and retrofits using genuine GM MDI and Dealer software.