Any update on a Trailer TMPS system?

[GChurch]

GChurch, how many wires are in the F250 wiring harness you repurposed (ml3z-13a576-tfa)?

My 2022 F150 has 8 wires in the truck side of the plug (a change from the 2021 builds that only had 2 wires).

I'm trying to understand if my 2022 F150 will now support the Trailer Cam and Trailer TPMS AS IT WAS BUILT the way you made your 2021 F150 by having to replace the harness.

It sounds like your 2022 f150 will work with everything! Maybe I forgot to say, but the lack of wires initially (2 wires only) was what made me want to change the harness to see if I could get everything working in the first place. You can see my original harness showing two wires below vs how it looks now, sorry for the separate picture angle. I suspect that the f250 harness is the same with the addition of two more backup sensors (which anyone with a 21 build will see and want to tape off when they install new harness I used).

 

[GChurch]

Still waiting on @GChurch to verify the cable he used (from F250) for his 2021 F150 that worked for him, also JUST has 8 pins wired (on the truck side). Unless I missed his response.

I think that I answered your question but just in case I didn’t, the following pictures side-by-side the “bus?” connector located by the spare tire. There are something like double the pins on the new connector. To be clear I don’t know what the actual pinout mapping per wire is, but IMO not worth time trying to build your own harness now that we can use oem supplied for $75-$150. I also just noticed one of those connectors is upside down relative to the other. I think this answers the question about whether ford went fully hdmi style digital and decode wire signal per device to share wires. They don’t and don’t appear to have any wireless protocol available for devices yet.

 

[{tpc}]

So is the harness just plug and play? My 2022 just has the 2 wire harness so I don’t think it’s a 2021 vs 2022 thing, unless mine was just built with whatever since I didn’t order the cam/tpms option.

I guess I’m just wondering if I bought this harness if the other end is actually pinned correctly. Not the end that goes to the 12 way (where mine is 2 wire) but the other side. Would it be fully populated traveling back to the stuff in the dash?

 

[GChurch]

Alright guys I promised an update once I did the trailer install and I’m done now! The trailer wire harness was pretty easy.

Step 1) run the main harness from the existing plug and zip tie together, until you are under the trailer and find a good place to mount the tpms. I didn’t splice the main harness, I just ranthrough the first V, and stopped bc I would have to have spliced to go farther.

Step 2) mount tpms sensor in same place, and zip tie excess cables. Mount cables to frame to keep as tucked up as possible.

STEP 3) measure from middle of trailer to wall, then halfway up the wall to determine where you want to splice the camera connector cable and cut it. You have to do this if you want to feed the harness along existing channel unless your wire channel is huge.

Step 4) Starting with location you mounted tpms, plug spliced camera connector and feed the camera harness along the existing trailer light harness path to the rear. I used the same channel inside the trailer because it had flashing to hide all wires.

Step 5) Mount camera and drill hole for camera wire harness. Feed spliced wire through hole and zip tie to camera.

Step 6) remove flashing inside trailer and feed wire down to wall. Remove excess wire from harness and crimp or solder/connect the spliced wires.Replace flashing and you’re done!

 

[GChurch]

I guess I’m just wondering if I bought this harness if the other end is actually pinned correctly. Not the end that goes to the 12 way (where mine is 2 wire) but the other side. Would it be fully populated traveling back to the stuff in the dash?

It uses a bus connector that is generic at the spare tire (to my knowledge) so no rewiring up to your dash required. I can’t personally guarantee it will work for you, but it worked for me with just the new harness from spare tire bus to hitch adjacent smart trailer plug. If your 2022 only has the 2 wires at the smart trailer plug a camera/tpms will definitely not work out-of-box unless you opt for the new truck-side harness. It’s plug and play from there!

 

[BLoflin]

I think that I answered your question but just in case I didn’t, the following pictures side-by-side the “bus?” connector located by the spare tire. There are something like double the pins on the new connector. To be clear I don’t know what the actual pinout mapping per wire is, but IMO not worth time trying to build your own harness now that we can use oem supplied for $75-$150. I also just noticed one of those connectors is upside down relative to the other. I think this answers the question about whether ford went fully hdmi style digital and decode wire signal per device to share wires. They don’t and don’t appear to have any wireless protocol available for devices yet.

GChurch, thx.

My question really was just on the 12 pin trailer "accessory" connector (the one below the normal 7 pin trailer lights connector). Where you plug in yaw sensor (if you have it) and where Trailer TPMS and Trailer Camera (as you verified on yours) connects.

The 2021 builds had 2 wires on the back side under the truck, and didn't seem to support anything but the Yaw Sensor.

You experimented with getting a F250 wiring harness for under the truck and it worked for you to support Trailer TPMS and Trailer Cam.

My 2022 has 8 wires as built. I believe (want to believe) that means my truck WILL support Trailer TPMS and Trailer Cam (and Yaw sensor if I wanted) as built, without me having to purchase/replace any wiring harness under the truck.

So my question to you was how many wires are populated in the F250 harness you used to plug into the back side of the truck 12 pin connector. I'm assuming 8, just like my factory built 2022 has.

If you already said that, I apologize as I missed it (reading manuals, forums, youtube videos I may be overloading my brains ability to retain!)

 

[GChurch]

My 2022 has 8 wires as built. I believe (want to believe) that means my truck WILL support Trailer TPMS and Trailer Cam (and Yaw sensor if I wanted) as built, without me having to purchase/replace any wiring harness under the truck.

So my question to you was how many wires are populated in the F250 harness you used to plug into the back side of the truck 12 pin connector. I'm assuming 8, just like my factory built 2022 has.

No problem BLoflin,

That’s a good abbreviation of what has been discussed, and what I did.

My new harness has 9 total wires, I just snapped a video for you to see. It took me a minute to refocus, but at the end of the video you can see the top 3 wires, and bottom 6 wires. If yours has 8 total wires I’d venture to guess everything will work for you.

I’d recommend double checking that you see the trailer tire pressure option in your gauge menu. And in your video camera menu, check that you see an option for a camera that shows nothing and has a (+) sign on it. I saw those options before I swapped harness, as that gave me some confidence this would work without forscan stuff. I’m posting an update that shows it all working in a minute so you will see what I mean.

 

[GChurch]

Alright guys,

Here’s the video of everything working (and most of the features) + setup from last night!

I have some initial takes:
1) The backup camera made parking the trailer a breeze. Camera quality is not as good on the trailer camera sadly, but I don’t really care.

2) you can use the trailer camera while driving. This is a huge plus for switching lanes on highway.

2.5) Best mode is pro trailer reverse camera mode, while you are in reverse. Once you are in reverse you see an “ -> trailer” icon, click this then click the aux video to get trailer feed with side view of both sides of truck camera, and it shows you the yaw position relative to the truck.

3) Trailer TPMS menu seemed slightly buggy as I had to recalibrate my tires twice. After I realized if it showed me the option again, I could click “ok” then “back option” on steering wheel to get readings to show. Will see if this behavior continues, maybe fixed via f

4) the truck detected low trailer tire pressure when I shut off and turned on with trailer connected. It showed up as a menu alert and displayed pressure, pretty cool!

5) The setup for tpms sensors per tire is not very clear. You click setup in the trailer tire pressure gauge menu, then you select number of tires and then go to whichever tire has arrow pointing to it. You have to release air from each tire until the trunk honks (1-2 mins per tire) so make sure you are near a compressor to refill.

6) This whole adventure was totally worth it. I’ll feel significantly more capable on the highway and maneuvering solo. Love my truck, only wish ford made this information available to all dealers and f150 truck buyers. Removing marketed features without so much as a comment sucks, and people who aren’t as hands on deserve to have all of this as a dealer-install no matter what the reason.

 

[BLoflin]

GChurch, thanks for all the info and vids.

I crawled back under my 2022 and I definitely have 8 wires. The back of that connector has 2 horizontal rows of 6. All 6 on the bottom row are populated (see pic) and then 2 of the 6 on the top row (a black wire and a blue/orange striped wire).

 

[smarty39]

This is amazing info, thank you to everyone for all the work figuring this out.

Off to buy the harness and full camera kit for my Job2 2021 with only 2 wires in the plug currently.

 

[EricR]

That looks fantastic, @GChurch !

Are you using the yaw sensor or sticker for the Pro Backup option?

For those of us with earlier trucks and the yaw sensor, do you know how it connects in with the TPMS & camera kit you are using?

Thanks!

-Eric

 

[SomebodyInGNV]

Alright guys,

Here’s the video of everything working (and most of the features) + setup from last night!

I have some initial takes:
1) The backup camera made parking the trailer a breeze. Camera quality is not as good on the trailer camera sadly, but I don’t really care.

2) you can use the trailer camera while driving. This is a huge plus for switching lanes on highway.

2.5) Best mode is pro trailer reverse camera mode, while you are in reverse. Once you are in reverse you see an “ -> trailer” icon, click this then click the aux video to get trailer feed with side view of both sides of truck camera, and it shows you the yaw position relative to the truck.

3) Trailer TPMS menu seemed slightly buggy as I had to recalibrate my tires twice. After I realized if it showed me the option again, I could click “ok” then “back option” on steering wheel to get readings to show. Will see if this behavior continues, maybe fixed via f

4) the truck detected low trailer tire pressure when I shut off and turned on with trailer connected. It showed up as a menu alert and displayed pressure, pretty cool!

5) The setup for tpms sensors per tire is not very clear. You click setup in the trailer tire pressure gauge menu, then you select number of tires and then go to whichever tire has arrow pointing to it. You have to release air from each tire until the trunk honks (1-2 mins per tire) so make sure you are near a compressor to refill.

6) This whole adventure was totally worth it. I’ll feel significantly more capable on the highway and maneuvering solo. Love my truck, only wish ford made this information available to all dealers and f150 truck buyers. Removing marketed features without so much as a comment sucks, and people who aren’t as hands on deserve to have all of this as a dealer-install no matter what the reason.

Other than tire pressure, does the TPMS monitor temp? And can you set the alert levels? On my TST TPMS, you can do both. I'd like to have fewer devices to have to manage but don't want to give up much in functionality. BTW, a few of the MOV files are duplicated.

I don't have 360 cameras now so am unfamiliar with the functionaity. Are there options to view the rearview camera continuously, and have other things on the screen? E.g., with nav you can have a small map plus other controls. Can you have a small camera view, plus nav, or plus media controls?

 

[EricR]

Also @GChurch ,

Are the TPMS sensors the type that screw onto the existing valve stems, or are they the kind that replace the existing valve stems and need to be installed at a tire shop?

Thanks!

-Eric

 

[SomebodyInGNV]

Also @GChurch ,

Are the TPMS sensors the type that screw onto the existing valve stems, or are they the kind that replace the existing valve stems and need to be installed at a tire shop?

Thanks!

-Eric

Fom the looks of the SuperDuty kit, they replace the valve stem. The tires have to be dismounted for installation.

 

[{tpc}]

I feel cheated somehow that my 2022 didn’t come with more than the 2 wire harness

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