I have an F55 that had a full lift and tilt seat, of which I removed as it was not needed and way to heavy. Subsequently the chair was giving a flashing code error indicating a problem with a possible solenoid brake trip, so I tried to do what I did to my other chair by putting the two wires together ignoring the switch. When this did not work, I looked deeper into the problem in the forum and a possible resolution was to reprogram the PM to remove any inhibitors.
In removing the seat (with two actuators) the controller is expecting to 'see' 2 actuators, reprogramming will fix this issue.
Often shorting wires on their own wont work as the system is expecting to see slight resistance.
Some where on the forum someone points this out...possibly woody or one of the other brains trust guys/girls.
A resistor in series, in place of where the linear actuators were attached should trick the system into thinking they are attached....and then you have an issue if you actually use the actuators that are not actually attached, dump a lot of current through that resistor...it gets hot and oh well...you see where i am going.
Better to get it reprogrammed or put the seat back on.