startup

local engineID = 1

function setEngine(state)
  if(state == false) then
    redstone.setOutput("back", true)
    redstone.setOutput("top", true)
  else
    redstone.setOutput("back", false)
    redstone.setOutput("top", false)
  end
end

setEngine(false)
modem = peripheral.wrap("right")
modem.open(engineID)
while true do
  local q,s,d,f,message,v = os.pullEvent("modem_message")
  if (message == 1) then
    setEngine(true)
  else
    setEngine(false)
  end
end