I only use the factory setup and I'm not changing my 35-40 yr. old tractor. I've had no problems using. IMO. If you can't see a "BIG BRIGHT RED LIGHT" come on or start flashing on the Dash then there's no way your see a Needle Drop On A Gauge. I don't want to be riding around all day staring at a Oil Gauge. When it starts running rough and you do finally look at it. It could be to late and that's even using a Light.
Ditto on the oil light.
Ditto on the oil light.