AE101 4AGZE SWAP, WIRING QUESTION Options

[JoKeRkId613]

Tomorrow I'm going to check out the 4A-GZE clip that I want. I've read a lot about the swap and the swap in other cars too. I have a question aboutt the wiring. How does that work? If I get the engine with an uncut harness... Would I have to rewire everything else in the car as far as the cluster and a/c control and all that sh it connected to the harness? Or can you just do the engine? That way I won't have to do any wiring. Because I always here people talk about how hard wiring is. With the 3S, for example. Since quite a few people have done it in the Celi, can't you just make a chart showing what wire from the 5s connects to what on the 3s ecu. I don't really get the whole wiring topic period. Can someone explain this to me? And if so, does anyone have a how to on how to wire a 4A-GZE. Or however that question is asked. Thanks.