Senders for 318

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The Dog House
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Posts: 807
Joined: Mon Jan 09, 2012 6:51 am
Location: Bordentown, NJ

Senders for 318

Post by The Dog House »

Looking at the front of my 318, there is a small sender (1/4" NPT) below and to the left of the thermostat housing. There is also another "sender looking" thing directly below the thermostat housing that is bigger (1/2" NPT). The larger "sender" does not have any wires connected to it. What is this larger "sender"? Thanks for any enlightenment you can provide.
1993 Sea Ray 200 Overnighter OB with 1993 Mercury 150 hp Outboard
1979 Starcraft 14' Rowboat with 2011 Mercury 9.9 hp Outboard
Former boat: 1971 Trojan F26
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Big D
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Joined: Sat May 01, 2010 10:39 pm
Location: Ontario, Canada

Post by Big D »

Probably the water temp alarm switch. You should pull it out, put in a pan with 1 inch boiling water and see if you get continuity. Or just purchase another one, install it and hook it up. It's a good alarm to have.
She was a 1969 36 ft wooden beauty with big blue 440s that we'll miss forever.
And thanks to the gang, 2012 Trojan Boater Of The Year
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