Rain Sensing Wiper Upgrade

[fred25]

Power should be there before forscan changes. and as a Note, Black was the 12volt+ as I found out after the fact.

Thanks! Another question if anyone might know. So when I peel back the cover to reveal the 360 cam and the rain sensor there is a sensor or something on the opposite side that seems to have the same wires (plus a few more) as the rain sensor going to its plug. Does anyone know what this is? And, if it’s hot, why wouldn’t the rain sensor plug be hot as they are pigtailed together coming out of the main plug?

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[Scott-E]

There are a few things up there, but it sounds like you're referring to the interior temperature/humidity sensor, which is located on the drivers side of that assembly.

I just completed the rain sensing upgrade, myself. I, too thought it was odd that the factory-installed rain sensor harness wouldn't be powered. I tried to convince myself that it was a Forscan setting, or a fuse/switch somewhere. I found nothing. So, not wanting to splice into the factory harness I bought the infotainment harness and it worked perfectly.

So annoying that the factory harness doesn't have power (why bother installing it at all?!). The good news is that adding the infotainment harness was a lot less work than I thought - took all of 15 minutes. My advice: just get it and move on.

 

[Dimi_5.0]

How did you order just the harness? I am in the same situation with no power at the sensor plug.

 

[MonkeySpank]

Theres a guy who sells harnesses at Infotainment, wears a black hat and trenchcoat;

jesse-infotainment

 

[Dimi_5.0]

Ok. Thanks! Do you reach out to him via PM or is there another way?

 

[TexasTorque]

Hi all, I traded my stone age '06 for a '21 XLT with 302A about 5 weeks ago and, although totally unfamiliar with Forscan and all of the Ford modules, I decided pretty quickly after hanging out on the forum here that I wanted to make three changes.

• add 360 cams
• add adaptive cruise
• add rain sensing wipers

Luckily, I looked at the wiring needs on all of them before tearing into it because there wound up being a lot of overlapping touch points. I think I've got all of that in place (aside from the bumper harness for ACC) and am happy to say that I just got the wipers working... first successful upgrade for me! Wanted to share my experience in case it is of help to anyone down the road.

I did not have power to the adapter for the rain sensor at the windshield. The wiring from that runs above the headliner back to the driver's side C-pillar and the missing wiring starts there at C903. Ground IS present at the sensor connector already, so you need to hook up the power and the LIN wire.

I was going to need to run wire to the cargo cam that I was adding for the 360 cam project. Most of it was going to the IPMA (conveniently right beside the steering wheel) and there is one power wire that runs to C265 in the passenger footwell (which is the exact same connector where the rain sensor is officially powered from when present).

The cargo cam wiring was going to come down the C pillar, so while I was there I added two 22 gauge wires to the C903 connector where the headliner harness with the rain sensor wires connected. Pin 29 is the LIN and pin 23 is power. The pins I used in C903 were these (LINK) from Mouser.

I added the two pins to this half of the C903 connection in the driver's C-pillar...

I ran these two rain sensor wires alongside my cargo cam wiring up into the driver's footwell. The power wire continued back behind the dash and over to the passenger's footwell along with the cargo cam power wire. The rain sensor power wire terminates in pin 9 of connector C265 over there. This connector received quite a bit of cussing from me. Not in a friendly location, but I eventually got it. The pins I used in C265 were these (LINK) from Mouser.

The LIN wire is interesting. It is actually a branch of a circuit that already exists from the steering column (connector C226A pin 3) to connector C248 pin 6 which appears to be under the console somewhere. Somehow or other you'll have to decide how to tap into this existing wire. The diagram implies that both wires are crammed into C248...

I have had my fill of Ford connectors for a while and wasn't going to tear into the console. I feared that I would get it all apart only to find that there wasn't actually room in the connector itself to terminate two wires and convinced myself that I would wind up having to cut it somewhere (first and only wire I cut in any of this... didn't want to but decided I would most likely have to regardless).

So.... I was already needing to get into the steering wheel to replace the standard cruise control switch with the ACC switch, so that's where I chose to splice in. It was probably the easiest wiring task I did on any of this. I was able to comfortably sit in the driver's seat and do it rather than standing on my head or crammed into one of the footwells.

Once you get the trim pieces off of the steering column, you'll find C226A behind and below the wiper stalk.

Pop it out and find pin 3

I cut mine right here near this connection

then slid the harness side and my new yellow LIN wire through some adhesive-lined heat shrink (LINK)

then crimped a butt connector (LINK) onto that pair and the loose end from the connector onto the other using a ratchet crimper (LINK).

and finally, I slid the heat shrink over it, hit it with the heat gun (threw a couple of damp shop towels over the plastic trim pieces below it to protect them from heat in case I got a little too crazy), wrapped it with some fleece Tesa tape (LINK) and put everything back together.

I wasn't able to make the manual Forscan changes called out by the OP... Reading a little more in the thread it seems like the '21 may have behaved a little differently. One of the three (If I recall correctly, it was the APIM) module addresses didn't even have the write/reload buttons beside it in Forscan...

I'm new to all of this, so I'm not sure what that meant but I didn't see an obvious way to change it so I tried the Englishy "rain sensor enable" options in each module and it worked. From the diffs below of the before (top lines in blue text) and after (second lines in green text) though, I wound up with almost identical changes that were called out by the OP. I wound up with an extra "4" in the 3rd slot of Data2 in the SCCM for whatever reason.

APIM

IPC

SCCM

Anyway... Sorry so long. As mentioned, all of this is only a few weeks old for me, so this is a culmination of everything I have soaked up from the amazing efforts that you all have assembled on the forum and I'm truly grateful. I'm doing an IPMA swap in a couple of days as the last step (hopefully) for my 360 cams and am feeling much more confident about the programming process after dipping my toes in the water here on the rain sensor.

It goes without saying that for the rain sensor, the harness from Infotainment would have been far easier. If I didn't already have the terminal pins, crimpers and a need from the other projects to get into the exact same places that the rain sensor wiring needed to go, I would have gone that route (or run the same two wires above down the A-pillar rather than the C and re-pin the rain sensor harness connector to those two new wires rather than what is in place over the headliner).

 

[acole]

Is the gel sticker necessary for the sensor, or can I just install it bare? I got a used sensor off of eBay and it didn’t come with the gel sticker, so not sure if I’m missing something or if it doesn’t need it to work.

 

[Je1279]

You will need the gel sticker to attach the sensor to the windshield.

 

[Weller12]

Hi all, I traded my stone age '06 for a '21 XLT with 302A about 5 weeks ago and, although totally unfamiliar with Forscan and all of the Ford modules, I decided pretty quickly after hanging out on the forum here that I wanted to make three changes.

• add 360 cams
• add adaptive cruise
• add rain sensing wipers

Luckily, I looked at the wiring needs on all of them before tearing into it because there wound up being a lot of overlapping touch points. I think I've got all of that in place (aside from the bumper harness for ACC) and am happy to say that I just got the wipers working... first successful upgrade for me! Wanted to share my experience in case it is of help to anyone down the road.

I did not have power to the adapter for the rain sensor at the windshield. The wiring from that runs above the headliner back to the driver's side C-pillar and the missing wiring starts there at C903. Ground IS present at the sensor connector already, so you need to hook up the power and the LIN wire.

I was going to need to run wire to the cargo cam that I was adding for the 360 cam project. Most of it was going to the IPMA (conveniently right beside the steering wheel) and there is one power wire that runs to C265 in the passenger footwell (which is the exact same connector where the rain sensor is officially powered from when present).

The cargo cam wiring was going to come down the C pillar, so while I was there I added two 22 gauge wires to the C903 connector where the headliner harness with the rain sensor wires connected. Pin 29 is the LIN and pin 23 is power. The pins I used in C903 were these (LINK) from Mouser.

I added the two pins to this half of the C903 connection in the driver's C-pillar...

I ran these two rain sensor wires alongside my cargo cam wiring up into the driver's footwell. The power wire continued back behind the dash and over to the passenger's footwell along with the cargo cam power wire. The rain sensor power wire terminates in pin 9 of connector C265 over there. This connector received quite a bit of cussing from me. Not in a friendly location, but I eventually got it. The pins I used in C265 were these (LINK) from Mouser.

The LIN wire is interesting. It is actually a branch of a circuit that already exists from the steering column (connector C226A pin 3) to connector C248 pin 6 which appears to be under the console somewhere. Somehow or other you'll have to decide how to tap into this existing wire. The diagram implies that both wires are crammed into C248...

I have had my fill of Ford connectors for a while and wasn't going to tear into the console. I feared that I would get it all apart only to find that there wasn't actually room in the connector itself to terminate two wires and convinced myself that I would wind up having to cut it somewhere (first and only wire I cut in any of this... didn't want to but decided I would most likely have to regardless).

So.... I was already needing to get into the steering wheel to replace the standard cruise control switch with the ACC switch, so that's where I chose to splice in. It was probably the easiest wiring task I did on any of this. I was able to comfortably sit in the driver's seat and do it rather than standing on my head or crammed into one of the footwells.

Once you get the trim pieces off of the steering column, you'll find C226A behind and below the wiper stalk.

Pop it out and find pin 3

I cut mine right here near this connection

then slid the harness side and my new yellow LIN wire through some adhesive-lined heat shrink (LINK)

then crimped a butt connector (LINK) onto that pair and the loose end from the connector onto the other using a ratchet crimper (LINK).

and finally, I slid the heat shrink over it, hit it with the heat gun (threw a couple of damp shop towels over the plastic trim pieces below it to protect them from heat in case I got a little too crazy), wrapped it with some fleece Tesa tape (LINK) and put everything back together.

I wasn't able to make the manual Forscan changes called out by the OP... Reading a little more in the thread it seems like the '21 may have behaved a little differently. One of the three (If I recall correctly, it was the APIM) module addresses didn't even have the write/reload buttons beside it in Forscan...

I'm new to all of this, so I'm not sure what that meant but I didn't see an obvious way to change it so I tried the Englishy "rain sensor enable" options in each module and it worked. From the diffs below of the before (top lines in blue text) and after (second lines in green text) though, I wound up with almost identical changes that were called out by the OP. I wound up with an extra "4" in the 3rd slot of Data2 in the SCCM for whatever reason.

APIM

IPC

SCCM

Anyway... Sorry so long. As mentioned, all of this is only a few weeks old for me, so this is a culmination of everything I have soaked up from the amazing efforts that you all have assembled on the forum and I'm truly grateful. I'm doing an IPMA swap in a couple of days as the last step (hopefully) for my 360 cams and am feeling much more confident about the programming process after dipping my toes in the water here on the rain sensor.

It goes without saying that for the rain sensor, the harness from Infotainment would have been far easier. If I didn't already have the terminal pins, crimpers and a need from the other projects to get into the exact same places that the rain sensor wiring needed to go, I would have gone that route (or run the same two wires above down the A-pillar rather than the C and re-pin the rain sensor harness connector to those two new wires rather than what is in place over the headliner).

Thank you for this. I am looking at adding
rain sense
Chmsl camera
Heated steering wheel.
This comment helps with 2 of these for sure
Now if I could only find an hvac controller with heated steering wheel heated seats but no cooled seats. (Idk if cooled seats is a rabbit hole I want to dive down).

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