I've had the suction cup come off the car windshield a number of times. It can't be trusted over the long haul. At least reset it every day and tether it so it doesn't go away entirely.

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Pat- 2007 DL650A was ridden to all 48 contiguous states. 2012 DL650A is just getting started.
Nicknames for posting ease on my part, Vee = all DL1000s. Wee = 2004-2011 DL650s. Glee = 2012+ DL650s