I need help wiring a car head unit for a boombox I am making. The problem that I'm having is that to save my settings, the head unit needs a constant 12v supply. Currently, I have a computer power supply going to the head unit supplying the 12v along with 5v for a PC fan I am using to help with cooling. The problem is that I am planning on putting in a motorcycle battery and switching between the power supply (wall power) and the battery (portable). I need all components to run off of either power source and to be able to switch between them without overloading the system or losing the constant 12v. Please help and sorry if that didn't make sense or was too complicated.
Topic by eliweitzman 3 years ago | last reply 3 years ago