5.3 Ignition starter wiring

[71chevystep4x4]

So I finally got my 5.3 started last night for the first time, but ran into a strange issue in the process. I had been fixing all of the minor issues with the fuel system for the last two days, and trying to start it along the way. It would crank over with everything working correctly but wouldnt start. So in the process of checking everything over, I hooked a remote starter up from the battery to the starter sylonoid. As soon as I hit the trigger on it, the engine fired up instantly. After turning it off and trying again by ignition, no start. Hit the remote trigger straight from battery, fires up every time. So what's the deal with my ignition not starting it, there's nothing to it???????