PUZZLE 080 Light Security

There's a mysterious thief after the treasure!
Keep the jewels safe by activating the security system.
Surround the two jewels with lit up panels to protect them.
Touching a panel makes it light up red.
Then, when the system is activated, the adjacent panel in the direction of that arrow lights up, and this continues until there are no more panels in the sequence.
Which panel needs to be lit up first?

Hint 1

Choose a panel and follow the arrows to see the route it would take.

Hint 2

Continuing on from hint one...
If you didn't manage to enclose the treasure with the panel you chose, try finding a panel one away from the start and widening the area.

Hint 3

The first panel is to the right of the middle.

Super Hint

The first panel is on the bottom row.

Answer for 'Light Security'

The answer is 'The bottommost, thrid from the right'.