Context of the parent was buying a spare OEM unit from a junkyard for experimenting.
Third party can be a money pit also. Like a volume knob that controls the factory amp via canbus rather than the fixed output level head unit. And the amp is conveniently not close to the head unit. And, mentioned elsewhere, but additional stuff for steering wheel controls, car data that the OEM head unit displayed (mpg, trip meter, etc).
Third party can be a money pit also. Like a volume knob that controls the factory amp via canbus rather than the fixed output level head unit. And the amp is conveniently not close to the head unit. And, mentioned elsewhere, but additional stuff for steering wheel controls, car data that the OEM head unit displayed (mpg, trip meter, etc).