I could not for the life of me figure out how to open this thing. Good job in cracking it. Are you intending to change out the LED inside?
Sorry. I should have posted a description. The thread with the background on this footwell light is at: http://priuschat.com/threads/changing-out-the-footwell-lights.110030/
this seems to be a very kool tester that looks for power, short,s and opens in prius plugs and wires. Please i need this so badly..where can i get one