I just found out why you couldn't see it when driving at night. In fact with SOL, the old NIGTH_SRJF1 night mod no longer works. I just deactivated SOL, (which implies having installed it via the Content Manager of Content Manager to be able to activate / deactivate it easily) and there with the weather mod NIGTH_SRJF1 we are at night and we can see it perfectly, even with F1