You really need to be looking more after the engine bay fuse-board rather than the headlight switch purely due to the wire the system is wired.
You possible tap in at the BCM but not 100% sure that would would.
You possible tap in at the BCM but not 100% sure that would would.
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.