are you using a fog light switch or parking light output going into the relay? this is how I did mine when I had my teg.
on the relay
30. went to the positive wire of the foglights
85. went to the + parking light wire at the parking light in the engine bay
87. directly to the battery fused with a 10 amp fuse ( you want to use atleast a 12gauge wire for this )
86. ground
the relay was in the engine bay close to the headlight, the best way to do it is keep the wires as short as possible and loom everything

I never had a problem with mine.. but if you are using an actual foglight switch let me know and I can figure out another way for you