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Good photos! I know how difficult it is to take them behind that console.
The black double spade is exactly what you thought - the wire with the fat insulation is the one from the dome lamp, and the smaller wire from the delay relay. It plugs on the door switch tab. Not much wiggle room either, so that's why it might be loose. A second tab on the driver door switch works with the buzzer to let you know you are trying to leave your car with the keys in the ignition.
The fat red wire with the loose connector is the one you would power your motorized radio antenna with. If you had one.
The "extra" relay is for the AC. It delays the compressor coming on until 10 seconds of alternator output is seen.
One area I am weak in, is guessing what problems may have been left by a previous "technician." Looks like you may have a few. Looking at that loose ground in one of your pics, I might suggest you look for something like that in the wiring to the central locking relays. The blue/yellow wires are the reversible actuator motors -- all wired in parallel. The objective of those relays is to momentarily power up the actuators. The relay that engages supplies power from fuse 8, and the one that remains quiet supplies the ground through its normally closed contact.
--
Art Benstein near Baltimore
The roundest knight at King Arthur's round table was Sir Cumference.
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