I've started to only keep mine on the visor. Since I do travel into Va. (where they are outlawed), the visor is far harder for them to spot than on the dash. On the visor, all I have to do is unplug it from the cig. lighter if they roll up behind me, and with the red numbers gone, it just blends in with the rest of the blackness. I use black electrical tape to run the wire down the post . Since I use it in my truck too, I don't want to hard wire it in.