1 ground wire and 1 power wire (which is split) but it depends if you have front bumper harness or not as this will determine if you need to run to fuse-board or not.
You will also require programming before they will work.
You will also require programming before they will work.
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.