Can anyone guide me to helping me find the parasitic drain on my battery. I’ve replaced the pto, voltage regulator, both positive and negative battery cables and tried two or three different batteries. I have a Toro 30498 Floating Deck 48” Walk Behind and I’ve had an engine replacement and it now has a Briggs Intek 19.5hp vertical shaft engine. This is driving me absolutely crazy having to charge this battery every stop. I have a multimeter but not sure where I should in tracing this problem to find it and fix it.