wait a second, guys!!! wait a second...check this one out " Occasionally the unit will not operate. Generally, this comes from too much door pre-loading possibly coupled with a low capacity power source. When the UnLatch can't generate enough torque to release the latch, it automatically shuts down but then operates the next time it is triggered." LOW CAPACITY power source!!!! means NOT to BURN the power !!! ...SO...let0s imagine we "isolate" the negative and positive with this clamp conductor...which i suppose will low the conductive of the circuit, just because its rubber...

https://nescorentals.com/rentals/parts/conductor-clamp-for-6040-6050-6-ea/