Displaying truck gauges on a screen

[1939dodge]

I am new here and have been trying to figure out a way to read sensors in the truck and display them through an RCA cable to the AV system in the truck. Unfortunately I do not have an OBD2 port, so there has not been a simple solution yet. I have been searching the net, the forums and see there are many people looking for a solution like what I want.

So does anyone here have a program developed that can read the outputs for sensors and relay that into useful data that can be displayed? Anyone develop a GUI for the display?

What do you use to read the signals from the sensors?

Specifically I am looking for 2 boost gauges, tachometer, Pyrometer (exhaust gas temps), trans temp... Maybe more but those are the main items I want to view.

If you have any advice or information that would be wonderful.

[somewhereinusa]

I'm working on something similar, very early stages. The low temps can use a DS20B18 sensor which is digital. I haven't found any other senders that are digital. The others can use analog sensors, but need a analog to digital converter. Since you are gas you should be able to get rpm from a distributor, if you have one, or plug wire. You could also use hall effect or infrared for tach.

I have started a GUI but it's pretty crude at this minute and I'm having trouble figuring out how to get the answers I get from senders to show up on the GUI.

Sorry, not much help.
Dick