Oil pressure switch location, ABS cable replacement

Vehicle is actually 750 but it’s not an available selection here. 2015 super duty Cummins diesel.

Problem 1. Any help on how to remove a broken abs cable and replacement?Checked on YouTube on basic instructions but it looks different on a 750 super duty vs smaller trucks.

Problem 2. Oil gauge shows zero pressure and check engine lights on. Contrary to the indicators, engine runs fine. Need help to find where the oil sensor is at and replace it.

Thank you all in advance!
Chuck