power ports dead

I recently bought a 96 GMC Sonoma and cannot find this problem in 25 pages of reading on this site.The power ports located on both sides of the cig lighter have no power.I metered all the fuses in the panel and all check out.Where might the fuse for these ports be located? BTW this site has a wealth of info and all responsible should feel proud and thanked for providing valuable info
Thanks, Bob

My book says fuse #7 aux pwr. orn wire