My First Question is what does the A.I.R. relay do? Mines missing from the underhood fuse box. Also, while checking fuses I noticed that I am missing fuses in the #5 and #8 spots, the RR HVAC fuse and the Crank Fuse respectively. I'm most concerned about the Crank fuse and the fact that there are no metal retainers for these fuses so fuses don't even fit
. Any help would be appreciated