hmmm id love to be able to offer some help but without getting my hands dirty that's a bit of a ass scratcher, heres a couple things i've come across over the years, this relay position is usually called washer relay
it doesn't allways have a relay in it (like my car doesn't use one, it has the harness of a 92 525), when someone puts one in there it usually does weird things when one didn't come in there. another thing that happens and screws with things is most of the plugs around the washer pump receiver drier area can interchange and do some really weird stuff when plugged in wrong (not all of the plugs are used) i hope this helps
all america wants is cold beer warm cat and a place to take a poop with a door on it