Robahr24,
Do not use the junction box in Lowes or HD they will crack and warp under heat. The SS blank Switch plates are in HD or Lowes if you can't find them just ask someone. I'm using 3/8 vinyl tubing but some also use 1/4. I found the nylon tubing connectors in ACE hardware. I bought my EFIE from
fuel-saver.org
Bob