Yatour interference suppression filter / noise filter with new connector (YT-NFM)

This Yatour interference suppression filter puts an end to interference noises caused by the on-board network, such as alternator and switching noises.
This filter is Plug & Play and has a new type of connector that is placed between the Yatour box and the cable for the CD changer input.

In which cases to use:
1) A screeching whistle through the radio/amplifier, varying in pitch with engine speed.
2) A ticking sound in the radio/amplifier that varies with the engine speed, frequency usually 1/4 of the engine speed.

Remark:

If the engine is off and the fault is present, there is no point in using this interference filter.