I recently purchased a 2014 Bounder 34b and put it in storage for the winter and had taken the batteries out..  Today I went to re-install the house batteries and realized I don't have a neg to neg jump wire for the dual house batteries.  All I have is a pos to pos jump wire.  Two other wires are the main positive and main negative which were in the battery compartment.  I guess the question is should I have a neg to neg jump wire and if so that would mean the dealership or manufacturer didn't install it correctly.