As I started up my truck today I usualy look at my charging gage to see it "pop" up after the glow plugs turn of but the needle did not act as it should have. It only came up to the left side of the battery box and that is where it stayed as it usualy pops to the center of the battery box. Does this mean my alternater is out? I know there are some wise people out there that can tell me if its so. I live in puerto vallarta and turning in the core is not an option and i'll have to send to the states for one. HELP!