In essence, what you have to do it pull out the fog light switch from inside the car. Then with a 12V light tester check for these wires:
WireA: Will go live when you turn the ignition key to accessories
WireB: Will go on when you turn the headlights on
Then what yo have to do is cut the wire that goes live when you turn the headlights on (wireB) and splice the end wireB that is still attached to the wire housing into the wire that goes live when you turn the ignition into accessories WireA.
So basicaly Cut WireB about 1" up from the wire housing and splice the end of that wire that somes out of the housing into wireA.
in this case, the orange wire is the accessories wire. And the red wire was the headlight wire spliced into the accessory wire.
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