I live in Vermont and i’m new to owning a diesel. I own a 2003 Ford power stroke 7.3. I plug in my block heater but my truck still has a ton of trouble starting in the morning even if it sits for the day after starting that morning. I always end up running my batteries low and seem to have to jump start it but it still takes a ton of cycles of the glow plugs for it to even pop off. I noticed unplugging my tuner while starting it helped a little bit. I know I have to get some new batteries anyways and know that the truck has to have at least 11.6 voltage or in that area for the injectors to open. Is there anything else I can do to make my truck start easier?