Hello Friends, 

I just bough Mazda axela 2014. the informant system had v59 JP, i upgraded to newer v70.00.352 ADR Australia/NZ version. 

Need some to install the retrofit kit the USB hub. Mazda dealer charges around $495. just need to install Hardware. I checked few youtube videos people doing it. i am just afraid might damage something.   

Can any one guide if any one doing it other than Mazda dealers?

TIA.