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

[Dave Chase]

Hi Christian

Its Dave Chase. Thanks for getting back. From your description I'm 
talking about the switch which may be fine.

Dave

On 6/17/19 3:20 PM, Christian wrote:
> "Are there separate senders
> for temp gauge and overtemp indicator?"
>
> Yes.  I've only had to replace the hi temp/over temp switch.  My original
> one had 3 terminals, and was mounted just fore and slightly port of the oil
> fill cap, and just starboard of the fore end of the heat exchange unit.
>
> If it helps, and you don't mind me sending you a direct email, I can
> include an attachment that Warren Updike sent me of pedestal to engine
> wires and their colors, for things like these senders, etc.  His C320 is
> #62, I'm 138.  But his wiring schematics perfectly matched mine.
> -Christian
>
>
> On Mon, Jun 17, 2019 at 2:10 PM Dave Chase <londoc at blackbury.com> wrote:
>
>> I'm still working out the engine connections. Are there separate senders
>> for temp gauge and overtemp indicator?
>>
>> Dave Chase
>> 1994 C320 #97 "Indigo"
>> Winthrop, MA
>>
>>
>> On 6/17/19 3:00 PM, Christian wrote:
>>> 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
>>>>
>