Having a problem somewhere in my electrical system ..after running to a spot and fishing awhile when I restart my motor my console depth finder cuts off..I have 2 starting batteries with a switch.. it does this evertime when it is set to battery 1 and sometimes on battery 2..Batteries are 2 years old and the unit is new Lowrance 529..Was thinking a short or bad batteries but was hoping for a tip to save me sometime troubleshooting.. anyone had this happen before??? Thanks for any help.