I recently replaced my batteries but my port battery isn't charging. I believe I may have miss wired from the charger to the battery set up. I connected the red wire from the charger to the positive terminal one for each of the three batteries and hooked the three black wires to the negative side (one for each) of each battery. In reading through the ProTech manual it makes a statement about connecting both red and both black wires for the house batteries to one battery. Is this correct? I could see how this would work since the two house batteries are connected to each other already. Please let me know if you have information on the correct set up. Thanks in advance!