Got a classic car with a 6-volt or 8-volt electrical system but want to add a modern 12-volt accessory, like a new stereo? This voltage booster from Custom Auto Sound is exactly what you need. It's designed to take your 6-8 volt negative ground system and boost it up to a steady 12 volts, so you can power that 12V radio or other small electronics without having to do a full system conversion. It's pretty efficient – when nothing's plugged in, it barely draws any power (only about 10 milliamps). With the engine off on a 6V system, it can supply over 3.5 amps continuously, and about 5 amps when the engine is running at a fast idle. Installation is straightforward. Important note: This is for low-power accessories like radios, NOT for high-draw mechanical things like power windows, door locks, fans, or A/C clutches. Those need too much current and will overload it. So if you're restoring a vintage ride and want some modern tunes without the huge hassle, this little box is a smart, simple solution. Just make sure your car has a negative ground system first!