Thank you for the laundry and for the cleaning.

REGARDING THE 2ND FLOOR OUTDOOR LIGHT:

a) In wiring, especially the "three-way" and "four-way" stair circuits, where one set of lights on two or more levels is controlled by one or more switches, I have sometimes found it practical to make the required white wire ground connections separately at different locations, relying on the fact that the white wire ground connection is in the center of the 240 Volt transformer, and that therefore the required white wire ground connection would be the same for voltages from either side of the transformer. (Ask me for details, if this seems obscure.)

b) In stair circuits where the white wire ground connection could be supplied more conveniently separately at either end, I have (sometimes), instead of the three conductor - black, red, white and bare copper cable, used a two conductor #14 Romex cable - black, white and bare copper, to make the connection between two light switches on different floors. Then the 120V voltage would be switched back and forth between the black and the white wire whenever the switch was toggled. !! - Whenever I have used a white wire to carry voltage, I have wrapped it with a piece of black insulating tape as a marker. If you find such black tape on a white wire, you can assume that this wire carries a 120V voltage.

If there is a three conductor black, red, white, bare copper cable between the outside upstairs and downstairs light switches, it would have been reasonable for me to use two of the three conductors to connect the two toggle switches, and the third of the three conductors to connect the downstairs toggle switch to the upstairs outside light. It also seems likely - I can't remember - that a downstairs outside receptacle if there is one, at the western end of the north wall, would have been wired directly through the wall separate from the other outside installations.

c) Testing the wiring of the three way switch: The three way switch has a ground screw which should be kept connected to a bare ground wire.  The three way switch has three connections for 120V wires. On the upstream switch (which I believe is upstairs where you are working) there is one input wire. Identify it by measuring the voltage on all connected wires.  The input wire should always register 120V against ground, no matter to which postition the switch is toggled.  Now measure the voltage between each of the remaining two screw terminals and ground. As you toggle the switch, the voltage on each of the remaining screw terminals should likewise toggle between 120V and 0V.  If this is the case, you can proceed to step d) below.

If this is not the case, if on toggling one of the screw terminals intermittently receives 120 V while the other remains at 0V, the two wires have been inadvertently reversed. To correct this fault, first, wearing protective glasses, detach from screw no. 2, wire no. 2, which has 120V to ground no matter what position the toggle. As you remove it, be careful not to touch wire no. 2 to yourself or to any metal ground, and cap wire no. 2 temporarily with a wire nut. Now detach from screw no. 1, wire no. 1 voltage on which you were able to toggle on and off. Attach wire no. 1 to screw no. 2.

d) If there is a wire attached to screw no. 3, note the color of the wire and leave it in place.  If no wire is attached to screw no 3, look for an unattached black or red wire and attach it to screw no 3.  If there is only a white wire, (wire no 3).  tagged with black tape or otherwise, .  proceed by attaching wire no. 2 to screw no 1, being careful to avoid shock or short circuit.  Check voltage at screw no. 1 to be constant at 120V.  Check voltage at screw no. 2 to toggle between 120V and 0V.  Before attaching any wire to screw no. 3, check voltage at screw no. 3 to toggle between 120V and 0V. 

Before attaching wire no. 3, check voltage of unattached wire no. 3 against ground while toggling switch.  If you find any voltage on wire no. 3, with or without toggling, don't connect it, but telephone me.  If you find NO voltage on wire no. 3, with or without toggling, set toggle switch so that voltage at screw no. 3 is 0V, then attach wire no. 3 to screw no. 3.  Both upper and lower receptacles should have power at all times.  The light should be susceptible to being turned on and off from both above and below.