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I did the tail light swap on my XLE last month. You can tap into the license plate lights but I decided to tap into the trailer hitch harness which already has power for the tail lights. It’s located in the same area as the spare tire and there are plenty of wiring diagrams on the internet for trailer hitch wiring. Then I fished the power lines up the rear quarter into the Sienna roof behind the end trim piece which comes off easily and finally through the right rubber boot into the hatch. I used T-taps to ‘bite’ into the trailer hitch wires and into the new center tail light wires so I didn’t have to find the connectors that fit. The OEM tail lights were the only thing that I didn’t like about my XLE. I really like the upgrade but I also found that the original tail lights seemed under lighted for a van. I feel safer with the new tail lights.
This sounds like a promising option. Did you get the inner and outer lights on eBay or elsewhere? Do you know the specs on the connector and wire you used? Also assume it was a straight shot with the fish to the light housing from the top of the trunk?

thanks for the info! I’m also not too familiar with trying anything like this, if you can’t tell.
 

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This sounds like a promising option. Did you get the inner and outer lights on eBay or elsewhere? Do you know the specs on the connector and wire you used? Also assume it was a straight shot with the fish to the light housing from the top of the trunk?

thanks for the info! I’m also not too familiar with trying anything like this, if you can’t tell.
Yes EBay. Fishing wires: Yes straight shot up through the quarter panel into the roof to the rubber boot between the hatch and top of the Sienna. Used a $10 wire fishing tool from Harbor Freight to fish the wires to the boot. Pull the ends of the boot out of their holes and then it’s easier to feed your wires through the boot into the hatch. I used about 15’ of 20 gauge wire and T-Taps from Amazon so I didn’t buy any connectors. Also, finding the right connectors is very challenging. The side lights are super easy, the connectors match up so no wiring to do, 10 minutes each and done. I had them in for 2 weeks before tackling the hatch lights. The hatch is more work. Figuring out how to put the new hatch lights in, removing the hatch inner cover and subwoofer. Installing the lights, fishing the wires, and tapping into the right ones to get power to the hatch lights took me 2.5 hours. Knowing what I know now, I could easily cut that time in half. There is definitely a learning curve to this process… it helps if you’ve done wiring in cars before. I’ve upgraded sound systems and put in half a dozen stealth dash cams so I’m ok with removing panels and fishing wires so that everything is hidden and looks ‘stock’
 

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If you look around, the inner lights can be purchased brand new from dealerships for about $100 shipped for each. I wouldn't get the inner lights from ebay unless they were significantly cheaper in price. If you are unsure on how to install the inner rear lights, I'm sure you can take it to a car stereo shop or car repair shop and they will do it. The outer lights can easily be done and is totally plug and play.
 

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If you look around, the inner lights can be purchased brand new from dealerships for about $100 shipped for each. I wouldn't get the inner lights from ebay unless they were significantly cheaper in price. If you are unsure on how to install the inner rear lights, I'm sure you can take it to a car stereo shop or car repair shop and they will do it. The outer lights can easily be done and is totally plug and play.
Actually, you need all 4 light assembly's to do it correctly (2 for hatch and 2 for sides). You can get all four brand new from a Toyota dealer for about $830 retail. I assume you can save a bit if the dealer is discounting but I'm guessing you'll still come in around $700. The stereo shop idea is a good one, the average cost per hour for them in the U.S. is $77 an hour. They'll need 2 hours if they haven't done it before...
 

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The outer taillights can be differentiated by the white lumileds lamp shown in the picture. any taillights without the white led lamp assembly won’t have the three led lines. Any taillight will also have to come with its original harness.
Automotive tire Rim Automotive wheel system Electrical wiring Automotive exterior
 

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The outer taillights can be differentiated by the white lumileds lamp shown in the picture. any taillights without the white led lamp assembly won’t have the three led lines. Any taillight will also have to come with its original harness. View attachment 55204
The outer taillights can be differentiated by the white lumileds lamp shown in the picture. any taillights without the white led lamp assembly won’t have the three led lines. Any taillight will also have to come with its original harness. View attachment 55204
Just bought a 22 XLE Sienna and was very upset when I noticed the dim tail lights and especially the fake tail lights mounted on the hatch that don't even light up. I feel Toyota pulled a slick trick on me and others by not mentioning this difference in any of their printed material concerning the differences between the XLE and upper trim levels. They may feel good about it but I don't! If someone rear ends me at night, then it may become a serious issue!
 

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Just bought a 22 XLE Sienna and was very upset when I noticed the dim tail lights and especially the fake tail lights mounted on the hatch that don't even light up. I feel Toyota pulled a slick trick on me and others by not mentioning this difference in any of their printed material concerning the differences between the XLE and upper trim levels. They may feel good about it but I don't! If someone rear ends me at night, then it may become a serious issue!
I also was surprised to find I didn’t have the rear tail lights that the other higher models had. That’s exactly why I upgraded my ‘22 XLE to the premium tail lights. Without them I feel I’m more exposed to being rear ended. Shame on Toyota for choosing a few dollars more profit over the added safety/visibility on the LE & XLE models for their customers. I really think the LE and XLE Siennas are under lighted from the rear…
 

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Would have preferred if hatch lights not lit up then just have side tail lights.

Have noticed more vehicles [sedans and suvs] that have similar setup.

Much prefer the bigger tail lights that light up.
 

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Actually, even though the 2022 Toyota Press pictures show the Woodland with the 3 strip LED tail lights, it apparently ships with the single light like the LE and XLE trims...
Correct. The Woodland does not have the fancy LED taillights. There are not many differences between the Woodland and XSE (lights, suspension, front grille, wheel design). Some of the Woodland features (e.g., JBL stereo, 1500w inverter) are optional on the XSE.
 
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