Just finished rebuilding my head and putting everything back together topped off all my fluids so I went to go and start my truck but as soon as I turned the key to accessory I heard a pop, so then I checked all my terminals; they were tight and everything seemed to be where it was supposed to be (I could be wrong) so I cranked my engine for 3 seconds and upon returning to see what was going on I noticed that the glow plug relay and the terminals on the intake heater were smoking. And one of my battery posts melted.... I’m at a loss for what I should do to solve this problem.
