Ok here goes sorry its a long post but it has me stumped
Keep in mind it was down to 7F all night Saturday..Today (Sunday) I went out to start my truck, it was outside not plugged in (my kid thought it didn't matter that the cord was not plugged into the outlet on the house after he knocked it out with his hockey stick)
Anyway here's what happened I turned the key to cycle the glow plugs the wait to start light didn't come on but the battery and parking brake light did... I waited for a few seconds maybe 30-40 seconds cranked it up it started but ran rough rolled the smoke (as expected and understood due to cold) but I know the glow plugs had to have cycled or it wouldn't have started it was still 9F out
This is where it gets weird, here's the issue the stereo wouldn't turn on the gauges were not working at all fuel, tach, oil pressure, all sitting at the bottom touched the throttle nothing at all.. shut it off tried again same thing... Well I let it run for a few minutes and then I had throttle still no gauges or stereo.. drove about a mile and a half to work no speedo either, no turn signals... I left it running at work for about 10 more minutes after I got to work. I walked out opened the door stereo is on, gauges are all working fine.. I shut it down and left it outside for 6 hrs and it was fine when I left work tonight.. how could the cold make this stuff not work??? It seemed as soon as the truck ran for a little while everything worked fine.....