What is this plug for?

[Satchman]

OK, so I just looked at the wires. There is a yellow one with the markings of 574C and a brown one with hard to read writing. I think it is 921. There are only 2 wires coming out of the plug. Thanks for all of the help you guys have been providing!

 

[JD5210]

The attached document was taken from the 5X10 tech. manual. The wires are for the seat switch.