So i am doing a 1jz swap on A 2001 IS300 and i can not find any information on wiring as far as a jzs171 pin out in english. i understand 02-05 is300s have a different harness and use the 110 and other 1jzs so the wiring is slightly different. Nearly everyone ive tried to contact through social media has an 02-05 or just wont help out a fellow is300 guy, ive read up on countless forums, looked up all the videos on youtube, google searched and i just cant get any luck. Ive been stuck in this position since December 2017 so any information on what wires goes where and can walk me through this will be greatly appreciated. I dont care for A/C or traction control, i mainly just want the car to function so i can drive it without any complications. Fastest way to contact me is through Instagram, i dont check this or my email often. my IG name is my username

 

pinout is basically the same as a 01 is300.
You're going to need the mpx box in order to get your gages and ac to work.
https://quantum-auto.com/ols/product...eedmpx-control
email me and I will find the diagram you need.

-brandon elzner
www.quantum-auto.com