Serial A2H502012. Unit starts fine. Hydraulics working. No seat belt circuit option on unit. When sitting in the seat and I release parking brake, alarm continuously sounds and unit will not go into forward or reverse. The dash is illuminating the lift lock out (fork with a line thru it) but hydraulic functions work. Fuses and relays checked out. Seat switch harness had connector on it but not plugged anywhere. Found 2 wires on the main harness side with original pins on them but no receiving connector. I assumed these went together being that they were matching colors. One black and one brown. 1 of each on opposing harnesses. Connecting them did not work. I have a manual coming but it is 30 days out. Any help will be appreciated. Trying not to disassemble a harness. Come on Edward or swoop.