From the maintenance manual..
... ' down and locked switches - one on each main gear side brace and one on the nose gear drag brace;..'
...' the in-transit.....light (red) is illuminated anytime the the grear is in transit..........hydraulic pressure up to 1550 psi will cause the pressure switch to break the circuit ....causing the intrans light to go out. '
'..when the gear reaches the down and locked position... the locked switch is actuated and the respective down (green) indicator will light.....'
'..The air pressure switch is a safety device that prevents the gear from being retracted until an air speed of 59 to 63 kts per hour is obtained. '
Still they must do more, if the pilot side has 6 wires, passenger side 4 wires. will look at the nose one tomorrow....do they control the heater ?
Now if only l could copy and past the page here......(tried but it wont paste.....)