Any circuit that has constant voltage other than running a wire to the battery, I would think the brake light circuit is always hot. The radio memory circuit will pull no more current than an electric clock and maybe less.I am trying to upgrade the radio in my 1964 Thunderbird convertible. The new stereo requires a continuous 12v wire. What is the easiest way to add one? Is there a way to wire it from the fuse box?
Thanks in advance!