Dirty power?

[billydsz]

I wasn't sure where this thread belongs, so mods please move it to whereever is appropriate.

I have an escort 9500ix radar detector in my 09 370z. I have it mounted to the rear view mirror and purchased a power cable which connects it to the mirror power (by sticking pins into the connector in back of the mirror) to create a nice clean install.

However, most of the time when I start the car, when the radar powers up it's giving out a false laser alert. I am guessing it's probably some kind of power ripple, because if I disconnect the power to the radar detector and then connect it after engine start all is well. I have tried a different radar detector (same model) and it did the same thing.

I am thinking if I install a capacitor in parallel to the power cable that should solve the issue. The problem is I have no idea how to size the capacitor. Any suggestions on a size, or if you think the problem is something else, I would appreciate it!