1949 model 3200 panel truck fully restored including electrical. I charge the battery for 5 days and there is not enough oomph at times to roll the engine fast enough to start well. I'm considering installing a second battery, but my question is do I put them in series or parallel to get more starting power out of them? If parallel then where can I get 6 volt wires with two battery hook ups? Does anyone have any other suggestions, and yes the engine, starter wiring, battery cables were either rebuilt or replaced new. Thanks
Dave