Re: 2005 Club Car DS slow uphill
The "Negative" cable is the one that runs through the OBC and that hole in the OBC cannot be safely enlarged.
If the digital voltmeter on the dash is dropping in voltage, it could be a bad battery or cable between batteries.
Get some long alligator clip leads and clip the voltmeter (set to 20vDC) to each individual battery as you drive up the hill to see if any battery is dropping significant below the others in voltage.
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