have a 1991 jeep yj. it does not have fog lights or a fog light switch on the dash anywhere but it does have the two plugs on the front for fog lights. I took the fog lights off my jeep chorokee and plugged them into these plugs in the yj (same style plug and everything) when i turn on my headlights the fog lights do not turn on. and no i am not on high beam. and yes the lights do work.not getting power for some reason. if it has plugs for the lights shouldnt they work if you plug some in. I checked the fuses and relays. everything is there and is good