hey guys, sorry to bring up an old thread

im planning to buy a yumcha double din deck ,

this one actually:

http://cgi.ebay.com.au/ws/eBayISAPI....#ht_7750wt_941

it says that it can support steering wheel controls.

but i was wondering how they would be connected up to the honda controls if the only connection bettween the double din unit and the OEM unit is the AUX adaptor, which only takes the RCA in???

is there a way to tap into the steering wheel controls?
~Ray