Wiring is pretty straight forward -
The two 6 volt batteries are connected in series - +/- to +/-, in other words - red to + of battery #1, black to minus of battery #2, and jumper the minus of battery #1 to the plus of battery #2 - so that when connected you have 12 volts.
The chassis battery is straight forward - red to +, black to -.
‘91 Ultrastar Champion‘02 Georgie Boy Landau 8.1l Workhorse
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