E46 Rear Number Plate Light corroding - Help
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E46 Rear Number Plate Light corroding - Help
Hi
The rear number plate holder ie the contacts have badly corroded on my e46 to the point that it bascially needs replaced, can you please advise me if I can replace this as the second number plate light is fine?
Any help appreciate and keep up the good work on the site.
The rear number plate holder ie the contacts have badly corroded on my e46 to the point that it bascially needs replaced, can you please advise me if I can replace this as the second number plate light is fine?
Any help appreciate and keep up the good work on the site.
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steelgrey
- Posts: 8
- Joined: Mon, 27 Nov 2006 23:43:07 UTC
You can replace them both. The bulb fits in the clear plastic lense and its the bulb contacts that corrode. Don't waste your time trying to clean them as the spring clips that hold them in place appear to be a one use type deal and once you pop them out the spring lose their tension and they won't stay in again.
Buy new lenses from the dealer, the price is quite reasonable. Their price on replacement bulbs was shockingly low as well, so might as well get two new bulbs too.
Buy new lenses from the dealer, the price is quite reasonable. Their price on replacement bulbs was shockingly low as well, so might as well get two new bulbs too.
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redtwin
- Posts: 4084
- Joined: Mon, 20 Feb 2006 06:36:14 UTC
fao redtwin - replace plastic bulb holder
Thanks Redtwin for the reply if I buy a new plastic holder do I have to cut the wires on the orginial and solder in the new plastic holder or do they plug in somewhere without solder. Take it you just undo the 4 screws just above rear no plate.
Thaks
Thaks
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steelgrey
- Posts: 8
- Joined: Mon, 27 Nov 2006 23:43:07 UTC
Re: E46 Rear Number Plate Light corroding - Help
Sorry to bump such a pre-historic post. However has anyone else resolved this problem?
My rear plate lights are FUBAR'd. I don't even want to bother with the cleaning. I've seen many replacement units on eBay but as Steelgrey mentioned, don't I need to cut the existing wires? I can't see how the how lense unit pops out? The cover pops out yes, but how do you remove the corroded mechanism inside?
I've also seen the whole boot lid mechanism for sale, but I don't want that expense if I don't have to
My rear plate lights are FUBAR'd. I don't even want to bother with the cleaning. I've seen many replacement units on eBay but as Steelgrey mentioned, don't I need to cut the existing wires? I can't see how the how lense unit pops out? The cover pops out yes, but how do you remove the corroded mechanism inside?
I've also seen the whole boot lid mechanism for sale, but I don't want that expense if I don't have to
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kanulondon
- Posts: 15
- Joined: Tue, 28 Jul 2009 21:52:22 UTC
- Location: Edinburgh

Re: E46 Rear Number Plate Light corroding - Help
I had this on a 2002 sport and replaced the whole handle release/lamp holder with an OEM part wasnt all that expensive as I didnt colour code it just left it black same as the bumper trim
easy to do as well just dont close the boot!
easy to do as well just dont close the boot!
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brazilian
- Posts: 83
- Joined: Fri, 29 Oct 2010 16:04:57 UTC
- Location: Lanarkshire

Re: E46 Rear Number Plate Light corroding - Help
Thanks for the quick reply. I've seen an OEM part on eBay I was thinking of buying. I had the boot lid piece off this weekend, however I couldn't see how to disconnect it without cutting wires?
Did you cut wires? Or did I miss something and it's plug and play?
I bought a can of Halfrauds Titan Silver Spray to fix some rust spots, so I was thinking I could spray the item to colour match?
Did you cut wires? Or did I miss something and it's plug and play?
I bought a can of Halfrauds Titan Silver Spray to fix some rust spots, so I was thinking I could spray the item to colour match?
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kanulondon
- Posts: 15
- Joined: Tue, 28 Jul 2009 21:52:22 UTC
- Location: Edinburgh

Re: E46 Rear Number Plate Light corroding - Help
I've just done mine on my 2004 e46 330d. I I just cut the wires. Pulled out the old rotten bulb holders. I bought some Led lamps from eBay. Then soldered some short sections of wire in and soldered to new lights with the some heat shrink around the soldered joins. Easy job. I've never soldered before just borrowed the soldering iron from friend. Really simple
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barrelman
- Posts: 37
- Joined: Thu, 24 Jan 2013 13:32:07 UTC
- BMW Members Cars: E46 2004 330D Saloon

Re: E46 Rear Number Plate Light corroding - Help
barrelman wrote:I've just done mine on my 2004 e46 330d. I I just cut the wires. Pulled out the old rotten bulb holders. I bought some Led lamps from eBay. Then soldered some short sections of wire in and soldered to new lights with the some heat shrink around the soldered joins. Easy job. I've never soldered before just borrowed the soldering iron from friend. Really simple
Excellent.
Do you have the link to the replacement unit you bought from ebay?
I've did some soldering when installing a Reverse Parking Camera on my better half's Rav 4. I can buy the wire runs and the head shrink.
I've seen a used boot lip part for £40, but would probably prefer to swap out lamps and replace with something better as it will surely happen with the replacement set
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kanulondon
- Posts: 15
- Joined: Tue, 28 Jul 2009 21:52:22 UTC
- Location: Edinburgh

Re: E46 Rear Number Plate Light corroding - Help
I managed to repair mine by soldering in a small length of wire to bridge the gap that was left by the strip of copper that had rotted away. Fiddly little job but it's still working 12 months later. I might try the led idea mentioned above if (when) it goes again.
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mazeppa
- Posts: 18
- Joined: Wed, 10 Dec 2008 22:51:47 UTC
Re: E46 Rear Number Plate Light corroding - Help
barrelman wrote:I've just done mine on my 2004 e46 330d. I I just cut the wires. Pulled out the old rotten bulb holders. I bought some Led lamps from eBay. Then soldered some short sections of wire in and soldered to new lights with the some heat shrink around the soldered joins. Easy job. I've never soldered before just borrowed the soldering iron from friend. Really simple
So I pulled out the whole unit from the plug (which was hiding in the boot cavity). I disconnected and gave it a real good clean, came up nice but it still doesn't work (but weirdly no errors on my dash?)
I noticed all the wires 4 on the right hand side and 3 on the left hand side light. Happy to buy a new light bulb (anyone got any links?)
But how do I wire it all up? The colours didn't immediately make sense and why the imbalance?
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kanulondon
- Posts: 15
- Joined: Tue, 28 Jul 2009 21:52:22 UTC
- Location: Edinburgh

Re: E46 Rear Number Plate Light corroding - Help
http://item.mobileweb.ebay.co.uk/viewit ... 0835200340
I just soldered wires together keeping same pairings as on original and connected to the wires I'd soldered to these LED Lamps
I just soldered wires together keeping same pairings as on original and connected to the wires I'd soldered to these LED Lamps
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barrelman
- Posts: 37
- Joined: Thu, 24 Jan 2013 13:32:07 UTC
- BMW Members Cars: E46 2004 330D Saloon

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