97 ka24de into a 90 S13

[olddog]

Please help this Olddog learn new tricks. I have a 97 KA24de along with the complete wiring harness, ecu, and guages to swap into a 90 S13 . I want to use the 97 harness for engine management and connect it to the existing chassis harness but will do it another way if it is easier or better. I have looked for links to help but have only found pieces of the puzzle and have both wiring diagrams.

If people will help me I will document the entire process to make it easier for the next guy.

I love the 240sx as a platform and will be using this car to get back into autocross.

Thanks in advance for you assistance

Olddog;)