Yes, I have 19.12 open, but was confused by the factory settings listed being a little different that the new switch. Meanwhile I am running a 2.1 on  Digijet & no AC, so not sure if that makes any difference! 

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> On Aug 23, 2021, at 11:38 AM, vw_van_fan_Mark <madvws@cox.net> wrote:
> 
> The new switch you have is the standard replacement temp range.
> 
> The "wrong" switch turns on the fan at lower temps than that.
> 
> The early watercooled vans used one that turned on at higher temps than your new one.
> 
> Bentley page 19.12 shows the original factory temp switch ranges for waterboxers.
> 
> After you replace it, look closely at your old one to see what temp markings are on it.
> 
> Mark
> 
> Tom Buese wrote:
>> My thermo switch is bad & I have a new spare that is rated 85-93 degrees C. I read an old post from Mark Drillock talking about the several different switches that were available 12 years ago & a problem w/ using one that operates at a lower temp thus causing the #7 fuse  to overheat & melt the plastic around the fuse holder!  I dont want to install my new switch if that is the wrong one!
>> Do I have the best switch or did I get the wrong one? Inquiring mind needs to know before another 500 mile RT on Friday! TIA!
>> 
>> Sent from my iPhone
>> 
>> 
>> Sent from my iPhone
>>