My battery disconnect latching relay acted up. Found that the control circuit was corroding on the inside where the coil attaches to the external stud.
They are pretty easy to take a part.
Cleaned the connections and has worked ever since. Coated with electrical De-Ox before putting back together.
Maybe because I bought and carry a spare!
Bud
USAF Retired
Pace Arrow
2003 Chev Ice Road Tracker