This item is one AUX cable for For Mercedes Benz ML W164, R W251, GL X164, G W463.
One end has bare audio connector and the other is a 3.5 mm male jack.
Head unit needs to be removed and main connection harness unplugged.



Please check your radios main audio drop down menu.
AUX needs to be one of the options.
If AUX is missing, The option will need to be activated by a Car dealer or shop.