I have seen this done before and it makes a great deal of difference.
People have wired their fog lamps into the full beam, therefore it can be switched on so that when you flash someone, the fog lamps flash too.
Im relatively good with electrical wiring etc, but im not sure how to tackle this one.
I know that simply linking the positive feeds of the fogs to the full beam does not work and causes a fuse to blow.
I assume i would require a relay, and if so, does anyone know the wiring configuration for this, as normally I have found that the diagram on reverse packaging of relays is 80% wrong!!!
Any help appreciated......