I have 2015 IS 350 RWD. I want to install a radar detector and wish to hard wire it. My plan is to splice into a +12V hot wire that is hot only when the ignition is on under the driver side dashboard. Any suggestions for a good candidate, what color wire and where located?? Thanks in advance.

 

You can do a search. A couple threads popped up that will answer your question. You can wire from rear view mirror with ignition power.

https://www.clublexus.com/forums/is-...ew-mirror.html