I Need Help Installing It In My 2000 Gs 400..... Anybody Done It? Having Probs With The Wiring

 

Do a search, already been covered.

There is a step by step thread about installing Safc's in Gs400's.

 

This should help.This should be the same as the for the NEO model

https://www.clublexus.com/forums/sho...highlight=SAFC

 

i just had a shop do it lol, i had it installed the first time and it was wired wrong so the car wouldn't even idle properly and then we took it out and had another shop put it in, and now it works a lot better. good luck ^_^