I've been talking with Andy through PMs about a way to use the stock sender, and have the controller move the needle on the temp gauge in the dash.

What I've found is...

With a solid state (constant) 5v voltage regulator on the back of the cluster, I can move the needle though its range of motion.

With the stock pulsing regulator, I can only get the needle to about 1/3rd on the gauge.

So, if you have a solid state regulator, you can hook the stock sensor into the controller board, which will use that to control the speed of the fan. Then, you hook the wire that used to go to the sensor, into the controller board, and the controller will move the needle to show the temperature.


It may just be easier to drill and tap a third hole in the intake