Strange reverse light wiring?

Hi, I've got a Defender TD5 2000 pickup that I've had for around 6 years now. The reverse light never worked but recently with a bit of cleaning up I managed to sort it. Then all of a sudden it stopped working again. Anyway decided to get a new light unit as the original was a bit tired but after fitting, it still didn't work. Thought it might be the switch on the gearbox but this look OK. This is when I noticed the wire colours on the harness side of the reverse light switch connector. Instead of Green and Green/Brown as the wiring diagram suggests they are Black and Black/White. Plus the Black wire goes straight to earth (as you'd expect by the colour). I have checked that I haven't confused the switch with the Diff Lock switch.
Now I may just have a short somewhere but can anyone explain the wire colours?

Welcome to the forum

Ah dint know tratters had electrics. Yer be betterer to as tech questions int tratter section. This one is fer introductions only. Ava look over ere:

https://www.landyzone.co.uk/forum/defender-90-110-130.7/

Hippo said:

Welcome to the forum

Ah dint know tratters had electrics. Yer be betterer to as tech questions int tratter section. This one is fer introductions only. Ava look over ere:

https://www.landyzone.co.uk/forum/defender-90-110-130.7/

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Strange? You found my question Hippo but I guess as a Freelander owner you've got time on your hands to wander about.
Anyway thanks for the tip, question transferred, use your brains (?) to find me an answer.

best not to knock the peeps that try and help, otherwise you might be thrown to the wolves

Quite right, apologies but there's a lot of dross around these days, what with Brexit, Strictly, Jeremy Corbyn and all.

If yer download the "rave disc" from ere:

https://www.landyzone.co.uk/land-rover/rave-disk-maintenance-manual.260227/

for FREE, there's a Td5 wiring diagram int there. One assumes it will be ok for your year of Td5 tratter.

Exterior lamp section ses the reverse lamp switch S103 has a yellow ont green wire one side and brown ont green ont t'other side. Brown on green connects said switch to the reverse lamp bulb and supplies power to the buld. T'other side of bulb is permanent connection to earth via a black wire.

I has just bought meself a new cold chisel. Just saying.

Hippo said:

Exterior lamp section ses the reverse lamp switch S103 has a yellow ont green wire one side and brown ont green ont t'other side. Brown on green connects said switch to the reverse lamp bulb and supplies power to the buld. T'other side of bulb is permanent connection to earth via a black wire.

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Shortmoor Landy said:

This is when I noticed the wire colours on the harness side of the reverse light switch connector. Instead of Green and Green/Brown as the wiring diagram suggests they are Black and Black/White. Plus the Black wire goes straight to earth (as you'd expect by the colour). I have checked that I haven't confused the switch with the Diff Lock switch.can anyone explain the wire colours?

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O think he knows that @Hippo

The Mad Hat Man said:

O think he knows that @Hippo

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Ah fort he wanted conformation. I guess it's resistance meter time and start poking about.

Hippo said:

Ah fort he wanted conformation. I guess it's resistance meter time and start poking about.

Click to expand...

no need to - just connect non earth side of switch to earth and see if lights come on. If they do, its the switch,

The Mad Hat Man said:

no need to - just connect non earth side of switch to earth and see if lights come on. If they do, its the switch,

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I was thinking someone may have changed the wiring or down their own thing. Chock bloc's...

Clutch pedal to computer is white ont black. Same for brake fluid level switch and rear heated screen.
transmission switch for hi low ratio is black ont white.
are any of these mixed tup?