jawsmon
New member
I bought this truck used with 30K miles. After about 6 months the battery started going flat overnight. It isn't consistent. at first it was happening about every couple of months. The frequency gradually increased to present. Now it happens almost every week. It acts like something doesn't go to sleep and pulls the battery down. If I shut the truck off and sit in it for a few minutes I hear a lot of clicking as different systems shut down. I'm wondering if there is a relay or something that's faulty. I'm not sure how to test for a parasitic draw.