Every part but the 3PDT switch I purchased from radio shack. I found the 3PDT switch for $3.00 at a local electronic store. From start to finish this took me 45 minutes and total cost no more than $15.00. Ask friends if they have a soldering tool to borrow. Anyway the mount jack I bought at radio shack contains three terminals and if the package label reads phone jack this is okay. The mount jack I bought at radio shack was labeled phone jack and it works just fine. A male jack can be broken into parts; tip, ring, and sleeve. This relates to its characteristics left, right, and ground thus three terminals.