7805Yes I thought you meant all my voltages but here they are anyways...
1. 14.02 vdc - Fine.
2. 0 - Fine.
3. 4.94 vdc - Fine.
Opamp
1. 2.5vdc - High. This should be approx. 1.6 Vdc or less (with 43.9 mVdc on pin 4)
2. 43.9mv - OK. The V level from the shunt
3. 3.4mv - The comparator bias. This is low. It should be approx. 7.5 mVdv it will still work.
4. 0 - Gnd.
5. 3.5mv - lso low, but should work.
6. -0.2mv - shunt value, although I would never expect to see a negative value. Might just be the meter.
7. 2.5vdc - #2 comparator output, and with a 0 V value on pin 6 this should have a voltage level of approx. 3.2 Vdc.
8. 4.97vdc - OK. Vcc
If you were to ground, for example, pin 2 (for example, to Pin #2 of the 7805), the LED on pin 1 should turn ON. Allowing pin 2 to return the value off of the shunt should turn it off.
Try putting a 270 Ohm resistor between both pins 2 and 6 (the inverting inputs) and circuit ground:
This is to bias those inputs to ground when the shunt voltage floats.