pac interface for ls430

im trying to keep my steering wheel controls in my 02 ls430 i bought a pac interface for a pioneer radio but i cant find any info on what wire it is for ls430 all they have it for is 08 model ls? anyone know where i can get this information. thanks

try contacting them directly cause i know this unit supports IS300s and such and it's not even listed on their list.  if you have no luck try out this diagram [url]http://pac-audio.com/instructions/swix%20locating%20wire.pdf[/url]

thanks man ill have to check that out. the shop were i got my stuff called pac and they said that the control for the ls was ran off of fiber optic.. that doesnt seem right i jsut think they didnt have enough clientel with 430's to do some r&d on them. that useless button on my wheel is killing me