I am looking to rewire my car and upon recieving search results for car-part.com, I was a bit confused. They have engine harnesses, body harnesses, and dash harnesses, and also headlight harnesses. Do I need one of each or would the body harness include wiring for the dash, for example? I really don't mind if i have to buy all of them, but I also don't want to throw my money away. Thanks in advance.

 

If you're going to wire the entire car from scratch then you need one of each. What are your plans?