9:th-Sep-2014, 12:25:35
Must once it's plugged into the system I know when I had my aftermarket tow bar fitted I had two options one that taps into the lights or when that hooks into the system and would tell me if I had a bulb out (on what I was towing).
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.