I'm trying to install a car stereo in a Jeep Compass 2010.
The third-party car stereo came with a red cable that I'm supposed to connect to a fuse. It's marked as
However, the OEM car stereo was not connected to a fuse. It was just connected to the car's connector and to the antenna. So my assumption is that the car's connector already provides the
12v ignition source, otherwise the OEM car stereo couldn't have worked, but it did.
Is this assumption correct? Do I really need to connect to a fuse even if the OEM car stereo wasn't?