What year is your car? If it is a 94-98 the plug could be a traction control harness (if not equipped) or a for a convertible switch. I think the t/c switch was on the console near the hand brake on the older cars.
The two relays could be for optional equipment that the car doesn't have. Some v6's did not have traction control and none had the fog lights. For a couple years 94-96?, they did wire up the cars with the fog light harness/relay but no actual fog lights or switch.
I could be way off, this is simply a guess.
12 Black GT500 SVT PP l VMP TVS l JLT123 l O/R X l 28x11.50Rx15 M/T Street R's l BMR Suspension l Recaros
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