Continuing my generator transfer switch install in my 2004 doublewide. Just got a good deal on a Reliance 10 switch unit @ my local electrical supply house. There is a plastic conduit that runs from under the home right into the bottom of the panel that contains the central air compressor wiring. There's plenty of room to slide a 10/3 up from the bottom into the panel, then route it out the top of the panel to the transfer switch (other end connected to the genny plug outdoors). Is this allowed, just running a cable through the panel that isn't connected to anything in the panel?

Hello Everyone, I'm a first time homeowner and we've had the house for a while and our living room should have a 3 way switch for the living room light and a two way switch for the outdoor porch light from the little knowledge I've dug up on Google. We have a light switch on one side of the room that does correctly operate the living room light, but on the panel by the door I have the wiring nightmare seen in the picture. When we purchased the house none of the wiring was correct and the seller tried and failed to find the correct wiring. Now it's time for me to tackle this armed with a multi-meter and some tylenol for the ensured headache. Ive been doing some probing and have found that probed A to B shows 120v and probed A to D shows 120v but not found anywhere else. Any advice or help or links to helpful content is MUCH appreciated.