That product most likely is for Mazda non-Bose systems. Installing that on a Bose system, as I understand it, will lead to screaming loud volumes out of the unit.

 

We've been through that before - if you have Bose, a standard T harness will not work. Your caller will be so loud, it will blow you out the sunroof

 

Just ordered one with conditions that it works with teh Bose system. Let see how we go !

 

So I did this setup a while ago, and since then my stereo has A high pitched whining when on and especially accelerating. Just wanted to see if you guy had this problem to or what the solution could be. Thanks

 

I have my RIGHT volume turned all the way down, and the LEFT volume turned up just enough for the proper listening level. Yes, if you turn them too far up, there's definitely some engine noise that comes through the setup, but I found that it can be moderated.

 

check this out...70 $$$$$$$$$$$$$$$$$$

http://www.nexxia.co.uk/product.asp?..._code=SOT-1011

should it do the same by half of the price???