Hello, welcome and thanks for asking your question. My name is***** a Certified Auto Technician with 28+ years experience. I will do my best to assist you. please keep in mind that I may need to ask questions of you before I can answer. When you reply please feel free to add as much detailed information as possible pertaining to your concern.
At this time I am suspecting a loose connection at one of the batteries
or at the main power of the TIPM. I recommend to carefully check the connections at ALL battery terminals, if any of the connections are even slightly questionable, remove the connection, separate all eyelets and clean thoroughly with a wire brush including the Through Bolt that goes through BOTH positive battery cable connections. If you are ABSOLUTELY CERTAIN that all connections are clean and tight, I recommend a load test of each battery separately, Make sure to disconnect both batteries and perform a load test on each. If either battery fails, replace BOTH batteries and I suspect problem will be solved....
Keep me posted and let me know if you have any additional questions...
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