Jonni msport

Hi there i have installed the dension gateway 500 and bt1500 bluetooth unit to my e61 (no usb or phone prep)
and i have fitted a centre console from another vehicle including the eject box and correct snap in adapter
for my iphone 4 as i have no where to plug the eject box plug into i want to remove the plug and wire it directly
to my dension gateway plug for iphone.
if anyone can help i would be grateful
the wiring from a e61 eject box i have 4 wires plus the aerial lead
the colours are
green
brown
red
white

thanks Jonni