I wired in my Valentine 1 radar on my Plaid to the mirror / front camera housing. There is only one spot, it runs about 5-7v, its the red and black wire I believe on the 4 prong connector (has a purple and brown as well) located driver side under the rear view mirror main cover.. its a Very thin wire so you must be ultra delicate working with it. That is the only tappable line in that area.. all others including under headliner light connectors do not work or give a variable signal.
I have had the radar working for a week now.. However, today for the first time I have a car malfunction, adaptive suspension reduced, traction control reduced, steering reduced. I powered off the car and let it sit for 15min and it worked fine. I think I glitched the computer by hitting the brake as I was getting in the car causing multiple start ups to over lap (the AC, screen, and powertrain)... I do Not think it is associated with my radar tapping because its a front camera thing and all my cameras and such worked just fine and had no faults.. I also unplugged the radar to eliminate current draw and it didnt change the error so 99% they are unrelated... ***I will follow up again here with an Edit if it happens again so if you dont see an update here then do not worry....***
As far as im concerned its a done deal, works great, no issues and a good source.. The valentine runs on 5v+ per manual, so if your looking for a full 12v look elsewhere. I did find one 12v-14v line also to the interior camera but I believe it had major swings and although my V1 turned on, it did not like the power source for some reason and gave a wierd half lit screen on the radar with no control over functions