Park Brake won't release when pushing the park brake switch. The diamond with ! flashes. The door, seat and armrest switches are working and the lift arms and bucket hydraulics will activate but the park brake won't release. I believe it is either the switch, the park brake solenoid, or the harness (no sign of damage to the harness). I removed the park brake solenoid and the resistance reads 7.3 ohms (don't know if that is within spec or not). I have purchased a new switch as it was not too pricey, but the park brake solenoid only comes with the hydraulic assembly to the tune of $300+ and is not returnable. I do not have the right side display, so I can't download error codes (think I may add that to the machine for future diagnostics). Appreciate any thoughts including whether the park brake solenoid resistance is within spec. Serial # is JSP02048