So I installed my gauges today a speedhut fuel pressure and an Aeroforce. I did add a fuse for the fuel pressure gauge and tied it into the ignition 30amp fuse for my 12v and tied the dial light into the dimmer fuse with an add a fuse. Works perfect and looks great. I fired truck up to check that gauge and make sure there was no leaks in fuel line and gauge was working. Shut truck back off, plugged Aeroforce into obdII and it powered on without ignition on which I thought I was weird, is that normal? It lit up but no display. When I start truck it fires, idles for about 3 seconds and dies. Anyone have this problem before or have any idea why it would do this with the simplest gauge to install? Just my luck. Lol