24 volt trolling motor

Mytrolling motor checked out ok off of boat when re'installed wont run. Pos. cables on batteries hsve small plastic square, device with wire connected, is this a breaker??. If so if replaced will it run. Not too elec savvy. Looked on battery sight, batteries aren't connected in series.[ pos. 1 to neg. 2 HELP

https://www.trollingmotors.net/blogs/wiring-electrical/86994439-24-and-36-volt-wiring-diagrams yes those are probably resettable breakers should have a small button to push to reset.

does that little square box have a button on it and have you tried to push it in to reset it?

My guess is you hard wired motor to batteries to test off boat. Some boats have jumper in plug to get 24 volts . Make sure the plug is properly wire to motor cable .

Thanks to the guys who replied to my post.Your help &time was a big help!!. Found one connection on breaker wasn't too good , with the help of a bud, and head scratching, iam glad[estatic]. I have a workin 24v m.k. t.m. Look out next install h.b. 1198c.Then those crappie, better vanish, iam turning the cat loose to hunt. Thanks A LOT