[IS300AllShow]

See a professional installer. It can be done, but it is not recommended for a novice.

 

[vlad_a]

This is highly unrecommended. Stock headunit and stock amp exchange information digitally. Without stock headunit, or one of its boards to be exact, stock amplifier will not function.

If you have stock navigation unit, please note it will only work with stock amp present and functioning.

 

[hotcracker69]

now you can with this harness

Now you can, with this harness:<BR>
http://my.is/forums/showthread.php?t=309517

 

[Jman215]

This is highly unrecommended. Stock headunit and stock amp exchange information digitally. Without stock headunit, or one of its boards to be exact, stock amplifier will not function.

If you have stock navigation unit, please note it will only work with stock amp present and functioning.

So if I have the factory navigation, I cannot replace the head unit because it will make the factory amp stop working, which the navigation needs to work?