Lever starting CC timer

Lever starting CC timer

I was wonderin if this is possible and how would i code it. Im wanting to make a lever on the right side of a computer(5x2monitor above), maybe a few blocks away, and have it start a timer at 0 and go up, and when i flip lever off it stops timer and shuts off. Reason for this is because OCS does not display BC engine heat atm(v1.51)so if i make a timer I can know when my water pump engines are heated enough to keep water flowing in combustion engines.

any help is appreciated Thanks.

something like this might do the trick

local timer = 0
while true do
  os.pullEvent("redstone")
  while rs.getInput("right") == true do
	timer = timer + 1
	sleep(1)
  end
end

You'll have to make a reset button and additional stuff like that yourself
EDIT: the os.pullEvent() function just makes the program freeze untill a redstone event is detected. I did this so the "while true do" loop doesnt keep looping without a reason