Just so everyone gets a better understanding. I bought the car a year and some months ago. Car was running very badly so I knew I would have to rebuild the engine. So I did...I was told its a b20 from a 74 120. It has a vacuum advance distributor, dual su carbs, b21 pistons, F head. I finished all the engine work, dropped it in and a week later I deployed to Afghanistan. I just got back recently and now i'm stuck with the build. I forgotten mostly everything about what I've done to the car. The labels that I did write up has deteriorated so I don't know where to put what. I'm not very electrical savvy hence the reason i'm asking for help. The only electrical leads that I need to figure out is what goes to the starter and alternator. I know that the large red wire goes from positive lead of the battery to the stud on top the solenoid. The small red wire is from the ignition switch and goes to the top spade of the solenoid. The two black wires i'm assuming goes to the starter as well but not sure where to connect them. I'm also assuming they are ground being that they are black. That is essentially what i need help with...where to put those black wires.