Good morning, It must be the S version because there's no amp, I tried to connect the bypass cable straight to the original cables but my first HU goes into protection and my second works but can't find any stations and has no sound coming out of the speakers. The weird thing in Belgium is when you go to a Lexus/Toyota dealer to ask them something about this matter, they can't give you any information... The reason why I want to replace my original HU is because it has the famous "illness" on the cd system... I'll give it another try with the cable from the MR2 :winky: Thanks for the help guys !!! :D :D :D