Voltage drop at ballast resistor

E459ADB1-2EA2-4DB7-B6B6-468F4AA4A9C2.jpeg Couldn't sleep a wink last night so I got up and studied this thread from the beginning. A couple of questions.
1.With the four pole ECU do I really need the four pole ballast resistor? I was told some years ago on this forum I did not. This is what my resistor looks like today.
2. Most diagrams provided and the shop manual show the red wire from fusible link to the bulkhead connector. My fusible link is tapped into the bulkhead connector, with the red wire at the starter relay to the fusible connector. Is this an issue?
3. Does anyone have a DYI or know of a video for replacing the ignition switch?