Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Hi Rob, I'm Clay a certified master automobile technician with 30 years of automotive repair and diagnostic experience.
From your description most likely there is excessive voltage drop from one battery positive to the other. Check voltage drop with a voltmeter one lead on one positive and the other on the other batteries positive. Voltage drop should be less than 0.2 volts with the engine running and the alternator charging. Voltage drop should also be checked on the ground cables. If voltage drop is greater than 0.2 replace the cable(s).
I hope this information is helpful. If you have any questions or run into any problems let me know.
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