22:nd-Jan-2019, 08:46:33
They would all connect to the car speaker, they only use a small extra speaker for your bings and bongs for parking sensors, lights left on etc etc.
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.