I have a deluxe kit as in the link for sale, i believe it works on certain other models (rx400h?) it is missing the harness because it went with the car, quality bit of kit cost me £750 the harness will cost £200 i would like £300 including post or make me a sensible offer please note the use of the word sensible!
Would be fantastic for a group of folk to split the cost and share it, once the harness is fitted its easy to use and very effective , i only used it once before the car went to the great lexus yard in the sky so it's as new
https://hybridautomotive.com/product/prolong-deluxe-reconditioning-package/