I have installed several factory foglamps in 07 camrys, The weird thing is they are all wired from the relay box inside the car to the lap sockets up front...BUT they are not wired from the switch to the relay box, (if that makes any sense).. I usally change the switch and add a relay externally, then wire it to the juction box, I have tried to add the mising wiring but had no success, I dont think its wired inside the juction box