Electrical is gone

Fuses are all getting power except for the one that says INS. I have been looking at wiring diagrams in the back of the Chiltons but I will look into the other ones. NONE of the accessories work except the radio but its an aftermarket add on so I think it's directly to the battery. I've been checking tons of connections with a test light but not with a voltmeter yet. I was mainly looking for a complete power drop off for all these accessories to stop working.