[samir13k]

its strongly reccomended that you mount them on an insulated surface such as plexi, but if you cant, you should still find some source of insulation... Especially for the cRio and the camera... i also reccomend using plastic hardware when bolting down your cRio...

and i cant believe i'm saying this,
but if it really came down to it,

You could even mount it on the metal with posterboard between the electronics and metal... (using platic hardware still)
dont hold me to that one though, there may be rules regarding it. I dont think there are though.

But a under $30 sheet of thin plexi is a wise insurance protection on a 750 dollar cRio!!!