I just purchased my expedition and while going over it I found a relay hanging under the dash.Two wires either going to or coming from a relay depending on how you look at it been cut and then twisted together.I want to reconnect them,but want to find out what this relay does first since the wires were cut for a reason.It is a ford relay and it is a factory harness so it wasn't something aftermarket.Here are the colors of the wires coming from the relay. Brown,Green with a Yellow Stripe,Red,Blue,and a large black wire that I believe is a ground.

The red and blue are the ones that have been cut and twisted together.