Hey ya'll

First post here. Ive tried searching, not just this forum but the entire web and came up with nothing. I have a 2003 6.0. I'm having some issues. When I turn the key on, there is no "coil" wait to start light. I hear the glowplugs and everything. It starts right up every time hot or cold and runs great. I did the test and the bulb is working. I've checked the fuses and they all seem to be fine. I did not check the relays, not sure how to test those to be honest. Anyone have any ideas? I did find one post that said to unplug the fuel heater. and replace some fuse. I dont have a bad fuse so Im not sure what to do. All the other post where they didnt have the light, they also had a no start problem. Mine runs and starts fine. Any ideas???