Wiring, need help!

I have a 78 that my neighbor gave to me just to get it out of his yard. Antway, to cut a long story short, I have a problem with the wires that go to the fuel distributor I have a yellow with a black stripe and a brown on a plug that I (think) goes to the air sensor. Is this a fact? also some where there is supposed to be a plug that goes to the fuel return. I havn't a clue what color these wires are and where they are supposed to come from. seems that I'm missing it. If anyone can help. Please email me at [email protected]

thanks in advance