i have have been lurking on here for the last month or so and still have a few questions

I have a bagged 93 c3500 dually that had a 454, switched it over to a 6.0 liter

questions, what wiring do i need front the factory harness thats for the tranny.
i have the temp sensor and light and oil sensor saved but what else do i need

2nd i have looked at other threads and iam still confused about hooking up speedo and cruise. like i am completely lost lol

thanks alot everyone, i will get pics of my project soon