Rear Window upgrade?
Logistics Pro
Joined: Jan 2010
Posts: 4,049
Likes: 1,607
Really don't think you could run it through an upfitter since they're on or off. You'd have to potentially use two, one for open, one for close, but that seems like a lot of extra wiring. You could likely just get the ceiling trim that includes the button and run the harness for the rear window, if it isn't there already.
Logistics Pro
Joined: Jan 2010
Posts: 4,049
Likes: 1,607
Most people who get a truck w/o a sliding rear window don't want a sliding rear window, so I'm not surprised. My FIL actually hates having a sliding rear window. It doesn't leak, but he doesn't like the big 'frame' around it.
More Turbo
Joined: Mar 2024
Posts: 736
Likes: 303
From: SE Vermont, South Jersey
About the only thing I use my sliding rear window for is to hear my dual exhaust...
I could see a time where I' might want it to haul a 16' something-or-other... Speaking of which, I carried more than one 10' piece of PVC completely inside my SAAB 2-door sedan. Granted, it was 1/2 or 3/4 and was bendy enough that I could put one end in the passenger side footwell and angle to the opposite side of the trunk.
I could see a time where I' might want it to haul a 16' something-or-other... Speaking of which, I carried more than one 10' piece of PVC completely inside my SAAB 2-door sedan. Granted, it was 1/2 or 3/4 and was bendy enough that I could put one end in the passenger side footwell and angle to the opposite side of the trunk.
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4wd High
Joined: Aug 2016
Posts: 9
Likes: 1
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5th Wheeling
Joined: Oct 2009
Posts: 46
Likes: 3
From: Colorado Springs, Co
I plan to install a manual sliding rear window in my 2026 F250 reg cab when I get it. Ford will not install sliding rear window in the reg cab XL.
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Mountain Pass
Joined: Jul 2020
Posts: 104
Likes: 101
It looks like the rear window has limit switches at each end. If you only wanted the window open or closed then a single upfitter switch and Single Pole Double Throw (SPDT) relay (Upfitter ON = Relay ON (NO closed)) could be used to open it all the way and (Upfitter OFF = Relay OFF (NC closed)) would close it all the way.
Lots of windows on EBAY right now.
Lots of windows on EBAY right now.
Lead Driver
Joined: Oct 2014
Posts: 5,934
Likes: 1,351
From: NY/Canada border
I'd never order a truck with one. My truck came with one off the lot but it's never been opened and never will be. I've had previous trucks with them and for me the change in pressure or something inside the cab when the window is open isn't comfortable. Also, if there's any dust/debris in the truck bed or laying on top of a tonneau it'll swirl around and get sucked into the cab. I experienced that many years ago.
Logistics Pro
Joined: Mar 2005
Posts: 3,518
Likes: 2,469
From: West Michigan
Wiring might already be in place for the open/close. Just would need to buy the switch, and the wiring in the overhead area might be there for that too.
Mountain Pass
Joined: Oct 2019
Posts: 155
Likes: 55
Originally Posted by Poncho450
I'd never order a truck with one. My truck came with one off the lot but it's never been opened and never will be. I've had previous trucks with them and for me the change in pressure or something inside the cab when the window is open isn't comfortable. Also, if there's any dust/debris in the truck bed or laying on top of a tonneau it'll swirl around and get sucked into the cab. I experienced that many years ago.
Lead Driver
Joined: Oct 2014
Posts: 5,934
Likes: 1,351
From: NY/Canada border
I always have a big rear window graphic of my late dogs so a non sliding window is better for me. But the shop was able to do it with the slider anyway. Just one more reason that I never use it.
Cross-Country
Joined: Aug 2025
Posts: 86
Likes: 54
When you open the rear slider you also crack or open a side window to create good airflow. Never just open the back window at highway speeds.
Cross-Country
Joined: Aug 2025
Posts: 86
Likes: 54
I am aware of more than one 23+ reg cab that came with factory rear slider window. Ford says they won’t do it but they have done it.