looked at my 110 the reverse light wiring is like this. reverse switch 2 wires. to a 2 core cable [2 x green/brown trace] from switch going forward then up bulkhead coming out adjacent to clutch pedal housing,  1 green/brown goes to the matching single green/brown that is within the chassis loom [single bullet connection]  other green/brown goes to the rubber multi pin plug to connect to the plain green wire [12v feed from fusbox]  photo's to follow.