Front Seat Swap

[Riskie]

I have a white 2000 GS 300 with tan interior and I want to change them out with black seats. Most would say rehab poster them for the color you want but that would cost hundreds for all the seats so I can change them out for way less by going to pick-a-part and pulling them out a wrecked Lexus. 

Question is are the plug harnesses the same for the allotted years and models on the cars groups? If not is there a harness adapter? (Providing it isn't the same year make and model with different color interior) 

[1990LS400]

I suggest you find the part numbers of your seats on www.toyodiy.com and then use the part number cross reference to find the models and model years they were used in.