What do these three relays do?

[WickedWindsor]

I've unplugged these 3 relays to see what no longer works and everything seems to continue to work. Doors lock/unlock, windows, rear wiper, rear washer pump etc. I don't use the 4x4 shift module anymore due to my manual shift transfer case I put in so it is unplugged as well.

 

[boggs1227]

i think those are your towing package wireing lighting relays .

 

[93 blue explorer]

The box on the right of the picture I think is something to do with the 4x4.

 

[Willard]

Those have to be something to do with trailer lights, mine doesn't have those relays but I have electric shift 4x4 and everything.

 

[WickedWindsor]

That would explain it then. Each relay has the trailer harness color. One green, one brown, one yellow. OK thanks.