The wire color codes are factory. I did not "choose" them, Ford did. The first sentence explains the whole point of this how to, & if someone is going to refer to this write up they have a stock fog switch, 4 wires-1 is a ground, no too hard to figure out. Even without pics the depth of clarity here will result in a positive outcome given the interested party makes all of the same connections I did.
Now I agree, a 10 amp fuse on the low side of the relay is too high. Perhaps a 3 amp would suffice since this is a dedicated circuit being used here. I "borrowed" that info from an Expo wiring diagram since my bumper is from one. I will edit as soon as I am allowed. This 10 amp fuse is redundant anyway as its tied into a factory circuit.
Pics-apparently I cannot post any here in how to. I don't have any really, just a hand drawn wiring diagram. That's all up on my build page StrangerRanger99's 2wd reg cab