Brake and Oil Pressure Warning Lights Not Working

I have no idea what your avatar is. It's the size of a postage stamp. But thanks............

Go over to MyMopar and download the 73 service manual if you don't have one, that's as close as anybody knows how to get without buying one

If the 74 is the same, the warning lamps are powered by the printed circuit trace that also powers the gauge IVR. So if the gauges are working, the lamps should be. First thing to do is ground them to test. Find the switch wire for your parking lamp or go out in the engine bay and pull the wire off the brake distribution block/ proportioning valve down below the steering box on the frame. Ground that wire and see if the brake light comes on

If they really are not getting power, and if the temp/ fuel gauges are working, then it might be bad sockets, bad bulbs, or a trace burned up on the pc board