Ok so I'm deff not new to building I just have a question that maybe someone better could answer I just built another box series to be exact and my current wire is getting hotter than I would like and my mosfet is getting warmer as well I know it's not my build on the Addy because it's at . 4 and that's about 21 amps nothing dramattic I am having trouble finding out why it's getting as warm as it is any ideas 
