Lincoln Repair Questions? Ask a Mechanic for Answers ASAP
Since the Driver & Passenger Switch are like connected, I would want to check Driver Switch again & also verify that there is Ground on the Black wire at the Switch.Then Ground on the Pink / Light Green & Pink / Yellow wires when the Switch is held in the Lock & Unlock position.
Typically wires break inside the Door Boot / Kick Panel Harness
Sorry, this just means there is no break in the Black wire (Ground)There still can be a break in the other wires going thru the Door Boot
The Pink / Yellow wire would likely be the problem, you need to remove the Driver Kick Panekl & see if there is Gorund on the Pink / Yellow wire coming from the Door with switch in Lock position