Hi @mr2tone, have you sorted yours?
Though this is an old post, someone might still be looking for a solution to a similar problem and I hope this reply would help.
What car do you have? Mine is Vauxhall Zafira 2013 and I just installed my aftermarket car stereo.
I'll be releasing a video soon about how I installed it and the troubleshooting I did to make the stereo remember my new settings and how I connected the power to the cigarette lighter.
I hope it will be the same to use that power for your dashcam.
For the meantime here is the video I just posted where you can see my newly installed aftermarket car stereo.