We have a  cheap plastic stethoscope from an old kids play-set which helps in noisy campgrounds.

> On 14-Jun-2019, at 23:56, KIM BRENNAN <kimbrennan@MAC.COM> wrote:
> 
> Sadly, some campgrounds are too noisy for the audible way to work. 
> 
>> On Jun 14, 2019, at 10:24 PM, Jim. Felder <jim.felder@GMAIL.COM> wrote:
>> 
>> As a backup means of determining if the fridge is operating (on flame, which is what the LED will tell you) you can always lay a hand on the outside flue vent. If you listen closely you can tell what cycle the fridge by the sound coming from the flue.
>> 
>> 
>> 
>> Jim
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>>> 
>>> On Jun 14, 2019 at 4:26 PM,  <David Beierl (mailto:dbeierl@gmail.com)>  wrote:
>>> 
>>> 
>>> 
>>>> 
>>>> Can I jump on this thread to ask about the LED light near the bottom of
>>>> that same panel (on my 87 Westy). I think the light is to indicate that
>>>> the fridge is working on gas.
>>>> 
>>>> Mine has never worked and it would be nice to have. It's hard on the neck
>>>> trying to see the flame through the tiny window at the bottom of the
>>>> fridge. Does anyone have any thoughts on what the cause and cure might be?
>>>> 
>>> 
>>> Likeliest is black wire in LED panel harness unplugged from single
>>> connector in fridge harness. Or wire unplugged from the terminal where the
>>> thermocouple screws into the gas valve.
>>> 
>>> After that likeliest is right-hand chip is bad.
>>> 
>>> You *cannot* test this with a 1.5V battery. The signal goes negative to
>>> chassis ground, and the absolute maximum voltage for the chip negative to
>>> the negative supply pin is 350 mV. If you can make a voltage divider
>>> limited to say -250 mV max you could use that.
>>> 
>>> But when in doubt, replace the chip. Chips failing and the power switch
>>> coming unsoldered are about all that goes wrong with the board.
>>> 
>>> Yrs,
>>> d
>>>