[C320-list] M30 Floating Gnd on Temp Sender?

[Christian]

Sorry, just noticed you said "water temp gauge".  The link I sent is for
your high temp light/alarm.
-Christian

On Mon, Jun 17, 2019 at 1:59 PM Christian <ccaper at gmail.com> wrote:

> Dave,
>
> 1994 #138 here.  I replaced my high temp switch 2 years ago.
>
> I used this one:
>
> https://www.westmarine.com/buy/sierra--temperature-sender-used-with-light--10530822
>
> My original was the 3 terminals, where only 2 where used.  One of the
> terminals was a ground wire that ran to the engine block.
>
> The replacement I used, the body of the switch grounds into the the base
> it screws into, so you can remove the ground to engine wire.
>
> When I did my search, if I remember correct, I saw switches that closed at
> 170, 180, and 200.  My Perkins tends to run normal right at 183F.  So I
> didn't want false positives, so I went with 200, which is the switch in the
> link.
>
> Christian Caperton
> 1994 C320 #138 "Canuck"
> Monroe Harbor, Chicago, IL
>