The factory fog lights were made by Marchal, not sure the exact model number.
They had their own harness and switch, and were mounted in holes drilled in the top of the front bumper.
But unfortunately, the same fog lights were used on Mustangs too, thus driving up the price by Mustang enthusiasts.
Last time I saw a complete NOS set (harness and everything), it was around $450.
You can find used ones out there, but even then, they will still be over $100 I bet.
I bought a set of Hella 550s for $75, and I think they are a little better than the factory Marchals to be honest.
They come with covers, and resemble what the Marcels would look like for an 80s look.
So unless someone really knows about AMC Eagles (outside of the Nest
), they make a good investment for night driving in inclement weather.