with a dual 12 v bayyery system why do the batteries drain?
Asked by william__1970 Feb 21, 2017 at 03:18 PM about the 1990 Ford E-Series E-350 STD Club Wagon Passenger Van Extended
Question type: Maintenance & Repair
the lock cylinder is in the lock position and nothing is on within the instrument
panel. the only way I can keep the batteries charged is to disconnect the
negative cables until I'm ready to start it. Then it is fine
4 Answers
enginecreator answered 7 years ago
There is a short somewhere going to need to track it down, May need to use a short finder, they sell them at Amazon and other at some locations. I will upload a photo but it may get deleted by the site since it is not my photo.
There must be a parasitic draw. Check this out on how to check for that.... https://youtu.be/QRso1A0VScw
www.youtube.com/watch?v=QRso1A0VScw