I know the red wire goes to the indoor light fixture. See a sample solution.

Multiway Switching Wikipedia
Single pole switches are always connected to the. Troubleshooting a single pole switch is fairly simple. They have two screw terminals plus a ground screw. Ungrounded or hot wire. A single pole switch is connected in series with the ungrounded hot conductor when load is to be controlled from one switching point. One screw terminal is for the hot wire that feeds the switch from the power source. The single pole switch currently in the wall has the black wire from the load pig tailed and the red wire from the line goes to the other terminal on the single pole switch.
What type of switch is installed to control a luminaire from two different control points. The white neutral wire and the ground connection are always on or always connected to the light even when it is turned off. Single pole switches are the most common light switches in a home. Thats different from three way light switches which you might find in large room or a room with several entrances where the main light in the middle of the room can be switched on and off by two separate light switches generally located on opposite sides of the room. The other terminal is for a second hot wire called a switch leg that runs only between the switch and the light fixture. See if there is voltage at one of the switch terminals.
If you have one light switch that turns your light on and off then thats a single pole light switch. The other set of wires contains 1 red 1 white and 1 black wire i assume this is the line. How many switches are needed to control a luminaire from two different control points. A single pole switch has on and off positions. Single pole switches are always connected which wire. With power on remove the cover from the switch and turn the switch off.
Still sussing out bartleby. How to troubleshoot a single pole switch. Using a voltage detector see picture below place it next to the terminals on the switch. When wiring a single pole switch it is only necessary to connect the black power side cable to the switch. Normally single pole switches are connected to ungrounded hot conductor wire because they make use of simple on off position. The 2 wire source feeds to an adjacent switch for a differ.
Check out a sample textbook solution. Im moving a light switch to a different wall and have found that the cable from the switch to the light has 3 wires but i dont know why.