Eric,
Welcome to the forum!
Not to discourage you, but there are some things you might want to think about:
- PS1 is very old technology that wasn't considered a smashing success.
- The installation is probably going to be more complicated than necessary and result in a real one-off type of locomotive that will be hard to maintain.
- Replacements for the E-unit are probably very common and readily available.
There's probably a reason you can't find instructions on how to do this.
Best,
George