can someone tell me what the front bottom corner lights are for on this vehicle. Are those the parking lights? The ones that take a 168 bulb. The turn signal lights take a 3157 bulb but is this supposed to be parking light too cause they only work as turn signals yet those small bottom corner lights turn on when I turn on parking light switch. Just seem kind of small for parking lights. In manual shows front park/turn lights = 3157. Does the bulb need replacing to do a dual function?