[Sergio Meza]

On my 84, which should be the same as an 85-86, the wiring harness for the left rear tail light housing can be access from the inside of the left wheel well as it comes into the light housing. There should be an extra unconnected, taped-off wire for the rear fog light. The rear of the fog light can be reached via the front trunk once you remove the cardboard sheild that is held on by four screws. Like at the rear, the harness has the rear fog light wire taped off - untape it and plug it in to the fog light switch and you should be all set.