[hutchwareltd]

1967 400 - I have the stock manifold that has only one threaded port and 670 heads without ports. I'd like to keep the electrical temp idiot light and add a electrical temp gauge. Does a dual outlet temp sender exist that would allow idiot light and gauge?

[SRGN]

There's no single unit that I know of. If you are handy with electronics, you can build a board that triggered a relay when voltage feedback through the gauge circuit hits a predefined threshold, and use the relay to activate the light. You could alternatively find a thermostat housing that has a threaded fitting, and use it for the warning light.

[frankyboy455]

in one of my cars (1968 Camaro) I used the autometer 3654 water temp gauge (link at bottom of this post) to monitor temp, and as it is already configured to activate two different functions at two different threshold of your choice, I chose one ot light up my idiot light at 188 degrees (my choice) and the other one to start my cooling fan at 194 (my choice again). You can change those thresholds at any time, I do so when going at a bumper to bumper cruise for obvious reasons.

https://www.autometer.com/2-1-16-wat...-fse-3814.html

[hutchwareltd]

Thanks, that's a great idea. Could even fab up a little can or cylinder for it.

Originally Posted by SRGN

There's no single unit that I know of. If you are handy with electronics, you can build a board that triggered a relay when voltage feedback through the gauge circuit hits a predefined threshold, and use the relay to activate the light. You could alternatively find a thermostat housing that has a threaded fitting, and use it for the warning light.

[hutchwareltd]

That's a good option. I would hook the high zone output to the idiot light.

Originally Posted by frankyboy455

in one of my cars (1968 Camaro) I used the autometer 3654 water temp gauge (link at bottom of this post) to monitor temp, and as it is already configured to activate two different functions at two different threshold of your choice, I chose one ot light up my idiot light at 188 degrees (my choice) and the other one to start my cooling fan at 194 (my choice again). You can change those thresholds at any time, I do so when going at a bumper to bumper cruise for obvious reasons.

https://www.autometer.com/2-1-16-wat...-fse-3814.html