There isn't a separate, dedicated "interior light delay relay" in a 1998 Ford Windstar like you might find in some other vehicles. The delay function for the interior lights is usually handled by the
Body Control Module (BCM). The BCM is a sophisticated computer that controls various electrical functions, including the timed delay for the dome lights.
Therefore, you won't find a relay specifically for this. If your interior lights aren't delaying, the problem likely lies within the BCM itself, its programming, or a related wiring issue. You'll need to diagnose the problem using a scan tool capable of reading BCM codes, or by carefully checking the wiring to the lights and the BCM.
