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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19657  
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Have you checked Earth continuity.
Most likely the switch, usually start this time of year when it's colder. Replace and hopefully all sorted. Diesel$ Live$ Matter. ⛽️🛢️👨🔧🧰⚙️ RED, WHITE & BOOST! 🇬🇧 |
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12th Nov 2016 5:37pm |
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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 3998 
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If it was either of those things would I still be measuring 12v in the bulb holder? 2007 110 TDCi Station Wagon XS
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12th Nov 2016 5:39pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6489 
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As mentioned a few days ago in another thread, I have seen a failed reverse light switch which showed 12V at the lamp socket but which dropped to 0V when the lamp was plugged in.
 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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12th Nov 2016 5:55pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19657
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^^^^ Sounds about right, the reverse switch is earth switched too I believe.
As soon as it has current draw on it it won't work. Interestingly, I found an LED light would, Incandescent wouldn't. Maybe try it if you wanted to upgrade, unless you already are using LED? The thing is if your measuring voltage at both pins, that means it depends also on the earth in question and not it's continuity or capability of carrying current. They are known to be problematic, I've had it myself. I never touched my switch I found fitting an LED light solved the issue. Diesel$ Live$ Matter. ⛽️🛢️👨🔧🧰⚙️ RED, WHITE & BOOST! 🇬🇧 |
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12th Nov 2016 6:04pm |
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| Mo Murphy Member Since: 01 Jun 2008 Location: Letchworth Garden City, Herts Posts: 2089 
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If its the round type of reversing light, the usual culprit is corroded pins in the connectors requiring a new plug and bulb holder.
Mo The Land Rover 90 - Many are called, few are chosen. |
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12th Nov 2016 6:10pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6489
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It's switched on the 12V path.
Swapping to an LED isn't really a fix for a dicky reverse light. Although it may light it will not be at full brightness. The switch is cheap just a bit tricky to get to. A long straight spanner (22mm?) from underneath does the trick. 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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12th Nov 2016 6:11pm |
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| Chopperone Member Since: 13 Nov 2016 Location: Derbyshire Posts: 396
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I have the same problem.....
My new to me 2007 90. I am currently changing all lights to LED & I started with the rear lights. To be honest I don't know if the reversing light was working or not before I started the job. Anyway it doesn't now. I have 12v at the plug but it won't light an led or the old light or the old fog light.It won't even light my test light either using A separate earth or the earth in the plug. So I assume this means the switch is faulty......OR is it something else? Is it fairly obvious where the switch is? Who makes the best replacement switch? TIA Guy |
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17th Nov 2016 5:16am |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6489
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Switch part number is LR077773
The genuine LR offering is not a bad price - 10 inc VAT from duckworthparts (send a PM) Pattern ones are about 8 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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17th Nov 2016 11:16am |
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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 3998
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Just an update. Fixed today with a new reverse light switch on the gearbox. A hateful job when you have big sausage fingers like me. 2007 110 TDCi Station Wagon XS
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4th Dec 2016 11:04pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19657
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How did you get at it from in the end? Diesel$ Live$ Matter. ⛽️🛢️👨🔧🧰⚙️ RED, WHITE & BOOST! 🇬🇧
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4th Dec 2016 11:09pm |
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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 3998
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A combination of over and under.
I took the panel out under the cubby box. From there I could disconnect it (just), loosen it with a 22mm spanner, and unscrew the old one. But I couldn't articulate my hand enough to put the new one back in from there, so I did that from underneath. 2007 110 TDCi Station Wagon XS |
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4th Dec 2016 11:12pm |
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| Shorty53 Member Since: 17 May 2013 Location: Lancashire Posts: 135 
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My reversing light was flickering and intermittent. Replaced the gear box switch today, but a hell of a job. Researched this forum for advice. A dealer technician said that the L/R procedure is to remove the gear stick. Followed Bluest procedure and removed the cubby box and access plate. Scratched knuckles and a 22mm ratchet spanner just about managed to replace the switch. Impressed with those who replaced the switch from below with no disruption.
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23rd Dec 2016 1:29am |
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