chip fooo

Hello chevy family.I'm new to this forum so here we go. A few years ago I picked up a 1979 chevy c10. It was a rolling chasis with a turbo 400 trans. I've relpaced the front with the front of an 85-86 dual square headlight frint clip. After quite some time I've decided to finish this project. The biggest problem that I'm having is finding what the broke wires under my hood go to. Being that this is not my first chevy build I jumped straight in and researched as much as I could. If anyone can give me some guidance it would be deeply appreciated. The end result would be that I have to buy a racing dash panel and start from scratch. Again thank you and this forum is amazing these is some much useful info here.