I want to see in my car will run can't really track down the problem so I want to see what's the least amount of things needed to run the car

 

Air, fuel, spark

(Sorry did not see the "harnesses" part of the title)

 

that depends on whether or not you're going single, sequential, or non sequential...

more info needed

 

I've gone simplified sequential but I have nothing when I turned the key so I want to know what to check, everything I've checked has come back fine so I'm not sure what to. I figured if I can figure out the least amount of thing needed Ill be able to track down what is wrong

 

the starting system is the simplest in the car. if it's not turning over, then it's only a few things it could be.

battery, starter, clutch switch (most likely). this is probably the easiest thing you'll ever try to solve with the car, lol

 

There is also the security relay which is known to cause issues.