It's an aftermarket fog lights and I connected it the conventional way the instruction says, not hooking up to the high/low beam, It has it's own switch.

I was using it tonight, It was fine until I parked and turned them off.
an hour later when I about to head home, I flipped the switch and this is what I got::

THIS IS how the switches was designed. RIGHT side has a Green light, LEFT side has a RED light.
(If the switch is off, on the right side of the switch, it's a GREEN light, If the switch is turned on, the GREEN light would go off and the RED light on the left side would lid up)

BOth lights didn't come one. I tried it a few times and pushed the switch on /off. Everytime I pressed it to ON, I would see the Switch try to turn on because the RED light would lid up and then went off, but neither fog lights were on. When I turned it OFF, the GREEN light is on and is normal. and when I tried to turn it on again, I see the RED light tried to turn on but nothing happened and I heard "zaaap, zaaap, zaaap"(eletricity sound) and the RED light would bling at the same time too.

SO where is the faulty spot? my connection has a 12V relay and alos a little fuse box(15A.)

 

check for lose ground or power wire. maybe fuse is off. bulbs broke. you'll figure it out!

 

I don't think 2 bulbs are broken. the switch has power going into it, it's jus that when i turned it on, it's like it's trying to turn on becasue i see the RED light going on then off, but no go.