Hello Guys, I need help. Trying to help Dad with his truck. It's a 98 with 120000 miles on it. It won't hardly start in 40 degree weather. Now I know nothing about these. He says his gp light blinks on and off is this normal? What is the best way to test gp. Test light or ohm meter? What should the ohms be? Am I even on the right track. :help: Thanks Wayne

Ohms should be about 1.2, IIRC. Do a search on here for glows. You'll find all you need to know.