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Will the vehicle start and run now and then shut off after running or is a complete no-start?
Is the check engine light on? Any codes?
When the gauges stop working, can you turn the key off and back on and do the warning lights, abs, check engine, brake, etc., come on but still will not start?
Since we have no codes to go with, we will need to duplicate the problem and diag while it is failing. I would duplicate the no-start. While no-start condition is present check for fuel at the fuel rail service port. Or use starting fluid and spray into intake and see if it starts and dies. If so possible fuel pump. You can also verify ignition fire by pulling a coil out and leaving it plugged in. Use a screw driver and check for spark. Then post back.
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So the injectors are losing 12v pos from the ASD relay?
Sorry for the delay. Me internet went down. Have you check or replaced the ASD relay? Or is the PCM shutting the relay down? Either the PCM is shutting the relay down or the relay is losing voltage across the contacts (burnt). Do you have a volt meter?
This will take some timely testing and you will have to duplicate the no-start condition since we have nothing else to go with (codes). We will need to talk live by phone. But before that you may try one thing. Its called a wiggle test. With engine running, gentle start at one end of the engine harness and gentle wiggle the harness as you move down the harness to the other end. See if you get a reaction from the engine. Stubble, shut-off, etc. Try all the engine compartment harnesses.