i bought two of these after reading up on DIY trunk lighting... http://www.walmart.com/ip/22226850 these only seem to activate when there is movement directly in front of it. i installed two of them on the sides of the trunk with double sided tape on each side of the trunk, sticking to pieces of plastic on each side of the trunk. they are aimed downwards into the trunk. well when the trunk opens, there isnt enough movement to activate these things. are these particular lights just crappy? do other lights have more sensitivity towards activating? i end up having to wave in front of each to turn them on. kind of annoying. thanks!