I have a 59 3800. With a stock fuse box. It has posts for radio, heater, some lights, and then a few posts that aren't marked. Or have lost there markings does anybody know what posts are hot when the ignition switch is off? I know the cig lighter, and horn are always hot. But no fuses for them. I want to plug my radio wire into the fuse box. Not the radio hot wire but the wire you use to keep the preset station and clock I'm trying to avoid hooking the wire to the POS on the battery