Leafing through my 78 bronco owners manual and noticed fog lights were optional. I also have a 79 Bronco owners manual that does not mention this. I didn't know the Marchall's and even the switch in my Capri (without the indicator light) started out in the 70's trucks (maybe even something else before them??).
https://www.ford-trucks.com/forums/1...ord-truck.html
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