User Manual

Power wires
Usually, it is best to make all of the new stereo's wiring connections via the
wiring harness
（Please search the the wiring harness interface suitable for your vehicle model on
google.)
But if you have to make a direct power connection, you'll need to know the
difference between "switched" and "constant" power:
A switched power source is only on when the ignition is keyed. Connect your
new stereo's main (switched) power lead – usually a red wire – to a switched power
source, so that the stereo will turn off when you turn off the car, and not drain your
vehicle's battery.
A constant power source is always on. Connect your new stereo's memory lead
– usually a yellow wire – to a constant power source, so that you don't lose your
radio station presets, tone control presets, and clock settings every time you turn
off the vehicle.
Although rare, a few high-powered stereos require you to make a direct
constant power connection at the positive terminal of your vehicle's battery. This
requires a heavier gauge power wire, an in-line fuse (usually included), and a ring
terminal to connect the power wire to the battery clamp. You will have to route the
power wire to the battery location, which is often through the vehicle firewall and
into the engine compartment in order to make the connection at the battery.