Thanks for your guidance with this...

No display to give any error codes... this truck doesn't even have a battery meter on the panel!

OK, with the troubleshooting... Trying to move fwd or rev, the contactors aren't pulling in at all, so I manually pushed them in and still nothing...

If I manually push in either the fwd or rev contactor, and simultaneously push in the contactor below it, the drive wheel moves correctly. Checking for voltage at all three coils, I get 0vdc off any of the three contactors when I twist the throttle either fwd or rev. So it seems like they're not getting a signal to pull in?




Thanks again for your suggestions!

(Edited to correct symptoms info)