the plug harness is the hardest things to get. the only way of getting it is if you have connection outside the states. if you know someone from other countries, you can ask them to ask their honda dealership, but most likely they will cost a grip. but its easier to get them to go to a junk yard and let the junk yards search for one. but i suggest selling the ones you have, and go on ebay and buy one that is complete with the plug harness and switch button. average price for complete on ebay goes for about $200. dont forget, you will also need a power folding mirror relay box. some people use radioshack relay box, but i wouldnt trust it, i heard they blow out fast.