The bracket to the right is the closed latch of course and from what I remember the open position is held by a small detent on the bottom of the arm.
You might have to push lighty downward on the arm to get the detent in the correct spot. I wonder if the end of the arm, right there at the red end, is the detent to hold the window open. Or, it could be a friction type of deal that holds it open.
2013 Voltage 3800, 2012 Chevy 3500 HD
2010 Yamaha V Star 950
2009 Yamaha Raider
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