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Bought New OEM Tail Light .. Reverse Light Plug Doesn't Fit?

Bought New OEM Tail Light .. Reverse Light Plug Doesn't Fit?

Postby falconman515 [OP] » May 18 2013, 8:36am

On my left drivers side tail light it got Really scratched up so I bought a used OEM light on eBay.

Took off the old tail light and tried to put the new one one and the all the lights fit except for the bottom (clear lens) reverse light ... the one on my trick has a smaller plug on the harness then the rest and fits in the currnt hole on the scratched les of course but will not fit the used OEM light I just got.

I looked online and all tail lights I see have the same reverse light opening ... they are all like the one I just bought used.

Why does the current light lens and harness have the smaller plug on the harness that fits this lens but of course will not fit the used OEM lens I just bought.

Here are pictures below of the tail lights ... one is the current lens that is on the truck now with the smaller hole (and the plug on the harness will only fit this lens) and the used OEM lens I got from eBay that has the larger hole that looks just like the rest of the holes above it.

Any thoughts or feedback on this would be great.

Thanks so much. :)

Current Tail Light Lens showing a smaller hole with only two cuts for the light to fit into and turn.

Image

The new OEM light I bought on eBay shows a larger hole (which of course the current one won;t fit) that looks the same as the holes for the brake lights and has 3 cuts on it to fit the light in.

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Re: Bought New OEM Tail Light .. Reverse Light Plug Doesn't

Postby ASTE25 » May 18 2013, 1:57pm

I think they had a design change mid year or from one year to the next.
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Re: Bought New OEM Tail Light .. Reverse Light Plug Doesn't

Postby iTzTy » May 18 2013, 2:06pm

Yeah, one of those is for the 3047 back up bulb, which I think is the one you ordered. I did the same thing when I bought my right one, and ended up having to send it back to but the 2nd generation one. You need the tail light which holds the smaller bulb 921? Not for sure about the number, so don't hold me to it.
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Re: Bought New OEM Tail Light .. Reverse Light Plug Doesn't

Postby mfdrookie516 » May 18 2013, 2:20pm

I remember seeing someone post about this a while back... they got rear ended and the body shop had to splice in a new reverse light plug for one side.
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Re: Bought New OEM Tail Light .. Reverse Light Plug Doesn't

Postby falconman515 [OP] » May 19 2013, 7:39am

What is my best option here then?

Should I return the light and just try and find a lens that has the smaller spot for the smaller light plug or should I try and find a new harness that has the larger plug and use the light I just bought?

The lens I got used is in perfect condition and I Hate to return it since my current one VERY scratched up.

I've only got 2 more days to return the lens though so I need to figure out my best option here.

Thanks so much for any thoughts or options you think are best for me here.
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Re: Bought New OEM Tail Light .. Reverse Light Plug Doesn't

Postby falconman515 [OP] » May 19 2013, 8:17am

after more research I found that certain 2010,2011 and I think 2012 Sierras happen the have the smaller 921 bulbs lens and harness for some reason and not the normal larger 3047 bulb and bigger opening in the lens.

QUESTION (sorry for capital letters but I need to figure this out quick so I don't miss out on this deal)

Does the harness for the GMC sierra fit any Sierra? If I take out my current scratched lens and complete harness that houses the smaller 921 bulb (not the bigger regular 3047 bulb) and buy a new (used online) lens with the complete wiring harness intact ... will it fit my truck? Are the harness plugs all the same regardless? Keep in mind this lens and harness I'm looking at has the larger 3047 not the smaller one like I currently have ... that why I wonder if the plug at the end of the harness is teh same and even if so will it effect anything or not work right with the new larger bulb not being the same as it used to be or the same as the other side?

I can return this lens I just bought and pay an extra 10 bucks for this other lens with the whole wiring harness complete ... I just need to know if the plug will fit and if the truck will be ok with seeing a different bulb there (I figure so since it's just a regular 12v wire but you know vehicles sometime things are just not compatible.

If you have the answers to this I would GREATLY appreciate you feedback on if this will work fine.

Thanks so much guys for all your help. :)
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Re: Bought New OEM Tail Light .. Reverse Light Plug Doesn't

Postby cyclepuck » May 19 2013, 1:36pm

They changed from the 921 to 3047 mid 2011. All the 2012's should be the 3047. If need I would get the correct lens because I don't like cutting the factory harness.
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Re: Bought New OEM Tail Light .. Reverse Light Plug Doesn't

Postby falconman515 [OP] » May 19 2013, 4:28pm

What about a new lens with factory harness already there so I can just take out my current lens and harness and put a new one in???

But this new lens and harness has the 3047 bulb ... Would that matter? Are the harness plugs still the same and the change won't cause any problems?
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Re: Bought New OEM Tail Light .. Reverse Light Plug Doesn't

Postby ASTE25 » May 19 2013, 8:11pm

You can probably get a new replacement light and it will come with a replacement harness.
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Re: Bought New OEM Tail Light .. Reverse Light Plug Doesn't

Postby falconman515 [OP] » May 19 2013, 8:33pm

Right now I'm looking at replacement lens that does come with a harness BUT its the larger 3047 bulb.

Will that harness still fit my current plug, and will there any issues using a harness that has the larger 3047 bulb as a back-up bulb???

I am good to go if this will work but I just need to know for sure is all.

Thanks to anyone who can help with this main question. :)
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