You jumped the brake switch and the contactors pull in, both wheels spin freely? Follow the power circuit. Battery + through power fuses, power through contactor (s) that pull in for travel. Could also be the 1rec. To check that....unplug battery. Remove the power cable on the LH side. Plug in battery. Check voltage reading on both sides. Right side is battery voltage. Left side HAS to be exactly HALF battery volts. 36.2v - 18.1v (example)
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