I thought these lights were either full on or off?  Wouldn't this indicate
water in the system or something?

Jeff

> No light most of the way, but just before the last hill the LED began to
> re-illuminate, verrry faintly.  However, as the engine continued to
> warm, it got brighter.  Peak was prolly 50% brightness compared to
> test light when you start the engine.  Interestingly, I coasted down a
> hill and it appeared to dim slightly as the thermostat went down.
>