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)

 

First things first, check all fuses, connections, wires and bulbs. Make sure your grounds are good solig grounds. Once you make sure those are fine, move on to other things. Good luck!

 

I checked the 15A fuse box and look like it's good. The switch has power supplied to it.