You need to have the actual values contained in the variables strLoc and strMEID put into the SQL, like this:
Code:
sql24 = "UPDATE tblEquipment SET tblEquipment.Location = '" & strLoc & "'"
sql24 = sql24 & " WHERE tblEquipment.MEID = '" & strMEID & "';"
Ditch the ' around the values if these are numeric fields not strings.