I've got an '89. I re-wired my fog lights before I saw the SOGI mod. (I think I might have put a couple paragraphs into that tech tip. I know I did a few of them.)
Basically, the fog light switch doesn't work from the factory unless the headlights are on. The re-wire on the tech tips uses the park light output. I used a wire so that they can only come on when the key is in "run" position. This way they turn off while cranking the engine, or if you put the key in "acc" position to listen to the radio.