O.K. I'M NEW TO THIS DIESEL THING.... MY GRANDFATHER LEFT ME HIS 1986 F250. I KNOW GAS ENGINES BUT VERY LITTLE ABOUT DIESEL. FIRST OF ALL DOES THE INDICATOR LIGHT ON THE DASH ALWAYS HAVE TO COME ON BEFORE YOU ARE SUPPOSE TO HIT THE STARTER? IT CAME ON IN THE WINTER BUT NOW IT DOESN'T AND THE TRUCK IS HARD TO START IN THE MORNING. IT HAS A 6.9 LITER INTERNATIONAL MOTOR WITH ABOUT 90K(?) ON THE CLOCK. DO I NEED TO REPLACE THE RELAY FOR THE STARTER GLOW PLUG? DROP THIS DIESEL DUMMY A LINE IF YA HAS ANY IDEAS...... THANKS HAWG OUT.....