No power to interior/dash

[tristan582]

So my problem is that my power windows, tachometer, speedometer, odometer temperature gauge and blower motor all stopped working when i started my car Saturday night. Checked all fuses even the ones in engine bay and they were all clean and not popped. I checked to see if car was charging which it was. 14.2V when car is running. Battery is less than a year old. (Optima Red top). Not sure what else I should be checking. If a relay related to this were to go is there anyway of checking it? I assume with a voltmeter and checking for resistance. But not sure on this process. Car worked on a 750 mile road trip just last week and then this Saturday it just decides to stop. Car runs and drives just fine. Another note the gas gauge is working. Car is a 92 240sx. Almost completely stock other than an intake. Thank you everyone. Any more question please let me know and il try to answer as quick as possible.