I installed gauges into my 2001 Auto. I had fuel pressure and pyro before. I added boost. Checked all the gauges for light up prior to fully mounting the pod. They all worked. Installed the pod and hooked up all the gauges. No lights for gauges and no illumination lights in dash. Parking lights also wont turn on with headlight switch. Turn signals, head lights, dome lights, blower motor, and radio all work. I went to start the truck, it fired then died. I have good fuel pressure to VP. I checked for codes and none. I checked fuses and all looked good. Batteries were a little low due to cold weather so they are on charger. I will crack lines at injectors next to see if getting fuel. Could these be related or just coincidence? Need some advice on things to check. 

Go back through everything that you installed and tinkered with.  If it happened after installing gauges I am willing to bet that the problems lies in there.  Check all of your wiring connections, look for pinched wires and something that got smashed or shorted during the install.  If you can't find anything maybe unhook the gauges to see if it is something internal to them. 

 

Are you just visually checking fuses?  I would check them for actual continuity to make sure that they are good.