Rear Tailgate Window Control Module Relay (1984-89 4Runner)
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Customer Reviews
Was able to use my rear windows again
My back window controller was damaged by water intrusion. This was the only way to get my back window operational again, and I appreciate the additional options that it has.
Good on you for making these, wish I installed it sooner. After chasing my tail for weeks I finally broke down and bought one, instantly fixed my issues. Thanks again
Super easy to install. Plug and play. I really like the three extra switches for different options (like troubleshooting the rear wiper motor). Fit perfectly in the original Toyota plastic housing for the circuit board. Would totally buy again.
Excellent seller!
Let customers speak for us
The color is a little funky and there’s some details on it that are a little different from the original - it has those 3D printing lines in it and the edges aren’t the same as the stock one. Took a little finessing to fit but it’s very solid and I think it’s gonna hold up way better than the original. Overall this is a great product though. I know how hard it was to 3D print something this complex and I’m being picky with my review but wanted to be honest. This company is awesome and it’s rad we live in a time where people can literally make parts for these trucks now.
No issues replacing the old ones. These are well-made and fit perfect.
First off - this company is great. Awesome communication and helpful with answering order questions. Keep in mind these are 3D printed so they aren’t perfect replicas and the color is a little different but I totally get the huge challenges with 3D printing so it’s really impressive they look this good. They fit and function perfectly too.
Fits perfectly I recommend looks great
Great quality and fitment! I'm happy with the product and proud to show it off.
This was a really hard item to get anywhere. This was a lifesaver as I’ve been looking for this for years
Very high quality decals! Very impressed with the resolution and material. I have tried some other decals from a couple competitors for my ‘87 4Runner, and these ones from BLVinyl are by far the best quality ones I’ve come across! I definitely will be recommending these!
Very high quality decals! Very impressed with the resolution and material. I have tried some other decals from a couple competitors for my ‘87 4Runner, and these ones from BLVinyl are by far the best quality ones I’ve come across! I definitely will be recommending these!
It's excellent, exactly what i needed and expected
Great product fast shipping. Will do business again.
Anyone with a 1st gen needs these great for storage and the look amazing thank you so much very worth it
These A/C vents were a lifesaver, I tried to save vents from 2 junkyard trucks but they snapped on me trying to pop them out, I saw Preserve Rads 3-D design and tried them out couldn't be happier, they are actually built better than the OEM ones, now my air flows better in my cabin, GET THEM worth the money 👍
Good communication, fast shipping The quality was awesome original. I will most definitely do business again if needed. 
Good communication, fast shipping The quality was awesome original. I will most definitely do business again if needed. 
These reproduction Rear Window Control Module Relays are designed specifically for the 1984–1989 Toyota 1st Gen 4Runner and replace OEM part number 85930-89101. The original modules are well-known for failing, often causing the rear window to operate intermittently or stop working altogether. Our brand-new reproductions not only resolve all the common issues associated with faulty OEM units but also introduce key features that make rear window operation more convenient.
Each module includes three dip switches that can be toggled to match your preferences:
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Dip Switch 1: Allows the front center console rear window switch to roll the rear window down when the 4Runner is off.
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Dip Switch 2: Allows the same switch to roll the rear window up when the vehicle is off.
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Dip Switch 3: Bypasses the rear window wiper safety switch.
Proudly made in the USA, these modules are built with high-quality components and are engineered to outlast the original factory units. Best of all, they’re a true Plug-and-Play solution designed to fit perfectly into the existing circuit housing with no modifications needed.
Unlike simple bypass harnesses, our modules retain essential OEM safety features such as built-in current and voltage limiters to prevent potential damage to the window motor, window glass, and rear wiper motor.
*Each order includes only the circuit and does not include housing or a mounting bracket.*
Fits:
| Make | Model | Year | Trim |
| Toyota | 4Runner | 1984-1989 | DLX, SR5 |
| Toyota | Hilux Surf | 1984-1989 | SR, SSR |