Robin, the fog light switch isn’t a latching switch, it’s a momentary switch. The only one of four that isn’t latching. And don’t forget it will only latch/function when the main lights are on.
Regarding the fuses, the factory did notice that the PCB was functioning as a fuse when there was an indicator fault and started adding extra fuses on some later cars. They’re not that difficult to add. They are located behind the dash.
