I went this way.
View attachment 141479
On a 30A relay, triggered off the full beam, it's like daylight out there when I hit the full beams
Why would you think to trigger off your front fogs? Bit random
Either separate switching or triggering off your full beams. be sure to relay them in with fuses and please don't take this personally but do not skotchlock into the trigger wire, sheath it and solder or you can use any number of connectors to make a good electrical contact that can be sealed from the elements.