Well i JUST put NEW glow plugs in my truck 2 weeks ago and i put a push button in the cab for them. It has been starting great i have not even been plugging the truck in at all. So last night the truck would not start so i plugged it in and it started today. Checked the glow plugs and they are ALL BAD.... i only hold the push button for 13 seconds the first time i start it a day. I put the push button in so i knew if the glow plugs would stick. I just bought new glow plugs last month and the relay burnt them all up so that's why i put in the push button, I EVEN put a light on the dash so i know any time the glow plugs were on, so i can see anytime they stick and the light never came on any time, besides when i was holding it to start. Can anybody please help me i am very very discouraged and them glow plugs are to much money to be putting in 3 times a dern month.