This GoWesty product also interested me.  About 10 years ago I was happily driving down the freeway from Austin to Corpus Christi; broken V-belt (alternator and water pump in my 1.9 wasserboxer) produced lots of red lights on instrument cluster and steam in rear view mirror; pulled off immediately as soon as I saw these warning signals of death.  (Had an extra belt; had water; got 'er done.) 

But....I didn't know how long the red lights were on!  Was it 10 seconds, 1 minute, more??  Again, was just kinda mesmerized by the highway, not focused on instrument cluster.

At the time, I queried The List if there was any kind of sensor to AUDIBLY alert the driver of a bad situation happening.
Well...now there is.  For a fair price.  Good job GoWesty.
RichSan Diego

      From: Eric Caron <eric.caron@ICLOUD.COM>
 To: vanagon@GERRY.VANAGON.COM 
 Sent: Thursday, March 1, 2018 5:16 PM
 Subject: Audible Coolant alarm opinions
  
Hi listers,

        I scanned the GW sale email and noticed the audible coolant temperature alarm.  As a blind owner in the passenger seat I thought this might give me some insurance as I can listen for it no matter who is driving my van.

Anyone have experience with the unit.  Is it a install I could expect is pretty easy and doesn’t compromise the integrity of my instrument panel?
I can get speed from my GPS, coolant warning from this.  I can pretty much hear the speed of my engine revs and guess my tachometer.  If I get a audible oil temp and presure indicator I could keep track of my motor from the passenger seat with my eyes closed.

So anyone have experience with the unit?

Eric Caron 
85 GL Auto Westfalia