I pulled an after market radio from the dash and replaced with a newer unit that I had lying around. When I popped everything in I realized quickly that the constant power was not giving me any power at all. My ignition power works fine so i tied them together and you know how that goes ... every time i kill the power I lose all my settings etc.

HERE IS MY QUESTION ...

Would i be asking for trouble if I use the power going to the cigarette lighter for my constant power. All I believe it would use it for is to save the settings and to run the unit when the ignition switch is off. I will remember to turn the ignition to on if I use this setup though.
Does anyone know if this cause any issues?

Thanks
AFF