KSolara wrote:I heard that eclipse makes the systems for toyota and that if u get an eclipse headunit u can connect the steering wheel controls directly
other than that PAC-audio
That is false. The Gen 2 decks are made by Panasonic (even the "JBL" version). I'm not sure about Gen 1 though... Many Toyotas do have decks manufactured by Fujitsu Ten, the parent company of Eclipse, but that still doesn't enable aftermarket Eclipse decks to be compatable.
The steering wheel controls are hard wired from the factory, and very few aftermarket units have any receptical/wiring for such a connection, no matter what the brand.
The PAC control units splice into the steering wheel control wiring and send a signal to a remote eye located elsewhere in your car (in the case of the PAC SWI-X the signal can be programmed for any manufacturer). So, basically, it acts as a remote control and requires that your headunit is remote compatable...
If you have a headunit that is not remote control compatable, you're pretty much SOL...