Alright. My truck has developed an issue. First i had a problem with a battery that didnt hold charge and a fried alternator. Changed both of those, went to start it and found out that the glowplugs werent turning on. Usually i get a very loud click a bit of silence then click to let me know its ready to start. But now it just takes alot of time to finally kick over. Im gonna test the glow plugs when i get back home but i feel this is a relay problem. Can someone give me some advice as to what to check and where to look?