Okay here we go. Bought a 1995 Viper, I am guessing the 201D even though the title says 21'1". The trolling motor is being replaced and currently has a red and black to one battery and orange and black to the other with no jumper between the 2 batteries yet the 24V TM is working. There are two reset buttons in the bilge for the TM as well. So in the 30 plus years I have owned boats I always connected the batteries in series and just used the red and black from each battery to the TM. What gives? Is there a junction I am not aware of, I have never seen this on any boat I have owned. Two Skeeters, Terry, Pro Craft, Ranger or Tracker. Please advise. Also when did the Cobra Models appear from Viper? I am sure I will have more questions to come and will post pics once I get the TM, Keel Guard and graphs installed. Been rocking 103-108 with no end in sight so working in the garage is very limited this summer.