ok well i have a 87 formula, it had TPI but im swapping to carb,

my question is what parts of the harness under the dash, and in the engine bay do i need to keep.

i took out all the sencors that go to the engine, over on the driver side by the clutch master cylnder, but what all do i have to keep too make sure everything like the gauges and the other electronics work. like the heat, no a/c, speedo, tach, temp, oil, fuel, and volts, also the climate controls, and the other stuff.

thanks for any help.