Cd Changer connections

Hi there



Can some one help me please.



I have a rover 45, 51 plate with a XEQ100380 Singe cd Head unit(looks like a BMW Unit)



Can I fit a XEQ100270 Cd changer to this head unit. it does have one square socket with about 5 pins under the main harness plug, and nothing is plugged in there, is this the cd changer socket?



I don't have the cd changer yet but I need to now before I buy it that this will work



thanks



steve

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