"Mike -" wrote in message
> Was told that if the car doesn't already have the lights installed, one
> can not install them later....is this true?
>
> Thank you
I guess it depends on your state's laws,..but why they would ban properly
aligned (not pointing into the eyes of an oncoming driver) fog-lamps, or
mounted on a roof-rack

I dont know.
There's no technical or electrical reason, a long as they are
fuse-protected. Some state's require some additional lights to be switched
thru the vehicle's high-beam circuitry (on or off)
Personally, I haven't experienced any additional help from fog-lamps. Maybe,
other cars may see you better in fog tho.
Jason
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