i wana get a double din video unit for my tc. I also want to make sure the steering wheels work wit it also. Now my question is those harness that they sell for the aftermarket headunits to make it work wit the steering wheels control do they only work for certain brands and models? im thinking about getting this one http://cgi.ebay.com/ebaymotors/1026U-EONON-7-LCD-CAR-IN-DASH-TV-CD-DVD-PLAYER-GPS-NAV_W0QQcmdZViewItemQQhashZitem439d88b557QQitemZ290405791063QQptZCarQ5fAudioQ5fVideo
or this one http://cgi.ebay.com/G2202U-7-MOTORIZED-IN-DASH-TV-MONITOR-CAR-DVD-GPS-NAVI_W0QQitemZ400104954143QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d281d191f
can u guys give me good models and brands out there that i could look at?

The steering wheel control adapters only work with certain model radios, correct.

The only advice i can give to you is this:
Dont cheap out when it comes to navigation. Ive ordered from Eonon before, and they have quality products, but I've never heard of PolNav maps. I'd want my navigation software from a reliable/reputable company, like navteq or telenav.

do u happen to know if the adapter works with eonon? or just the big major brands like pioneer