Technical Water temp gauge & switch

I want to run the original temp light together with an electric gauge. If I fit a "T" into the head where the original temp. light switch was, fit the switch on one side, and fit a sender to the other side, will this give me accurate results?
I'm thinking that the sensors are not in the water jacket, and will read lower temperatures.

 

Can you put one sensor in each head? So that they are each in the water jacket.

 

you could do an experiment, first remove the light sender and install the gauge sender, and get a feel for how hot the engine runs under different conditions. Then remove the gauge sender and install the T and both senders, and see how it compares.

there are a lot of variables here, so it's hard to predict how it will work. But you can test it, and know for sure how it works.

 

I'd think it would be fine, super small inaccuracy if any. Unless you put 12" of pipe on there.

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