Self-Test Connector Locations
The Self-Test connector is found in different locations depending on model. Capri, Cougar, LTD, Marquis, Mustang and Thunderbird models have the Self-Test connector below starter solenoid between the left strut tower and the battery.
On Continental/Mark VII models, the Self-Test connector is below the coolant reservoir on the right side of the engine compartment.
On Crown Victoria, Grand Marquis and Lincoln Town Car, the Self-Test connector is found on the left fender apron near the hood hinge.