The Service Engine Soon light is on because he turned the key to ON without starting it so he could show off the new voltmeter. If the car was running, the tach would read at idle, the oil pressure would be like 40psi and the voltmeter would read like 13.9V or so...See that little light on the dash? "Service engine soon"??? The car is asking to have that 305 lump removed and replaced with something better.
It's begging.
But yes, it is asking for a better heart transplant!