How mush is that or how to you assemble the powered window kit in the door?

 

depends on what you're looking for and what kind/year car. if you're going for OEM then you will most likely have to purchase the floor harness and the door internals. My power window conversion kit for a coupe cost me no more than 250. If you are planning on buying an aftermarket kit then you can expect to pay no more than 200. There are other forums on honda tech that elaborate on this alot. Just use the search engine. Good luck