truck wont start no powers at gpr when key on
I know I have system issues like some bad glow plugs as the truck still barely wants to start unless plugged in and I jump the relay. I thought the relay was bad as it failed the volt meter test with the key on. I put in the new relay made by trombetta and still no luck with the key on. What do I test next. It was 40 here yesterday I plugged in for 15 minutes and it fired right up. Batteries are new and starter is new as well as the relay. What is next? fuse 22 appears to be good and batteries are charged.