Ahh. Right right. I don't have a 3+ but have a 3 and haven't had any problems with the camera in either that location or directly mounted on the windscreen looking out. The only time I've had glare and couldn't see outside was with the camera on the back windscreen looking forward into the cabin, and most of the problem was the dashboard reflecting on the windscreen (GC8, always noticed it).

EDIT: Buy a Bullet. Don't know why, just seems the thing to do. Also buy Motec, STi, 6 speed, and no Rota's.

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Air is for pussies.