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12-07-2020, 02:49 AM
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#1
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Senior Member
Brand: Thor Motor Coach
Model: ACE 33.1
State: Nevada
Posts: 316
THOR #21278
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2021 THOR ACE 33.1 - Brake Control Plug Location
Good evening folks. I have searched everywhere in this forum (as well as Google) on the location of the Brake Control Plug. My coach have the New V8 engine (if that makes a difference). I have a Tekonsha Prodigy P3 Brake Controller that I used when we had our 2015 Forest River Forester (E450).
I found some pictures from Etrailer that looked like almost a “square”, grey plug. I ordered Part # 3035-P from Amazon (which according to Etralier is supposed to be plug and play for Ford).
I crawled under my dash (left of steering wheel) and found 3 different plugs (open/available). But NONE will accept the Tekonsha Adapter part # 3035-P. Do I need a different plug? Or I just haven’t found the CORRECT plug from my coach for the brake controller?
Appreciate any information.
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12-07-2020, 03:00 AM
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#2
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Senior Member
Brand: Thor Motor Coach
Model: 2018 24.1 AXISSIXxSIX
State: Arizona
Posts: 6,762
THOR #13932
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If it won't work due to wiring changes consider one of the wireless units.
$250+- and no wiring at all. Powered by your 7 pin plug, controls by Bluetooth.
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12-07-2020, 09:38 PM
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#3
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Senior Member
Brand: Thor Motor Coach
Model: Damon Daybreak
State: New Mexico
Posts: 359
THOR #19133
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Quote:
Originally Posted by ador
Good evening folks. I have searched everywhere in this forum (as well as Google) on the location of the Brake Control Plug. My coach have the New V8 engine (if that makes a difference). I have a Tekonsha Prodigy P3 Brake Controller that I used when we had our 2015 Forest River Forester (E450).
I found some pictures from Etrailer that looked like almost a “square”, grey plug. I ordered Part # 3035-P from Amazon (which according to Etralier is supposed to be plug and play for Ford).
I crawled under my dash (left of steering wheel) and found 3 different plugs (open/available). But NONE will accept the Tekonsha Adapter part # 3035-P. Do I need a different plug? Or I just haven’t found the CORRECT plug from my coach for the brake controller?
Appreciate any information.
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May not have found it yet. Mine (2006) was tied up above the steering column. I wouldn't have found it if I didn't know it was there. Do you have an access hatch above the dash? If so, remove it to give you a better look.
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12-08-2020, 03:51 AM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: ACE 33.1
State: Nevada
Posts: 316
THOR #21278
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I crawled underneath my dashboard and this is what I found. Three different plugs, of which NONE will accept the Tekonsha Prodigy P3 plug kit I purchased that was supposed to work with FORD(plugs on BOTH ends).
Now, this pigtail harness came with my manuals (inside the black bag). It has 4 pins. I am thinking this "may" connect to that "4 pin" plug from underneath my dashboard (grey)? Then... I connect the other Tekonsha Harness that I purchased (with one end pigtail, the other end with plug that connects to my brake controller?
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12-08-2020, 03:52 AM
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#5
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Senior Member
Brand: Thor Motor Coach
Model: ACE 33.1
State: Nevada
Posts: 316
THOR #21278
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Thanks for the suggestion ducksface. I will keep this in mind as Plan B.
Quote:
Originally Posted by ducksface
If it won't work due to wiring changes consider one of the wireless units.
$250+- and no wiring at all. Powered by your 7 pin plug, controls by Bluetooth.
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12-08-2020, 06:07 AM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: Damon Daybreak
State: New Mexico
Posts: 359
THOR #19133
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Quote:
Originally Posted by ador
I crawled underneath my dashboard and this is what I found. Three different plugs, of which NONE will accept the Tekonsha Prodigy P3 plug kit I purchased that was supposed to work with FORD(plugs on BOTH ends).
Now, this pigtail harness came with my manuals (inside the black bag). It has 4 pins. I am thinking this "may" connect to that "4 pin" plug from underneath my dashboard (grey)? Then... I connect the other Tekonsha Harness that I purchased (with one end pigtail, the other end with plug that connects to my brake controller?
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even though our rigs are decades apart, mine too, had a pigtail for the trailer wiring, but mine was in a zip lock bag, tied to a wire bundle, under the dash. So, if you got that with the rig, I'd say it was probably for the trailer wiring. Brake/turn left, brake/turn right, ground, running lights. You will probably have to find the power for the brake controller, as it won't be in the 4 pin connector. I'd suggest grabbing your meter and verifying those signals on the pins of the connector you 'believe' is correct.
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12-13-2020, 08:49 PM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: ACE 33.1
State: Nevada
Posts: 316
THOR #21278
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I crawled underneath once again last night, looking for the brake control plug. I looked all over, and still didn’t find anything tucked underneath (other than the ones on the picture). Still on the hunt for the brake control plug. Any other suggestions on possible location?
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12-13-2020, 09:18 PM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: 2018 24.1 AXISSIXxSIX
State: Arizona
Posts: 6,762
THOR #13932
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It might not exist.
Take a look at your chassis invoice.
If it's listed on there, it doesn't have one.
I'm remembering another post where someone didn't have one.
Controllers haven't changed much. You can always old school splice it into the harness.
I know you'd like to find it but you've done a pretty good search and no one here is any help.
Next step wod be to go to a dealer and take a look at another Ford chassis, truck or rv, to kinda buy a vowel.
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12-13-2020, 10:24 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: Freedom Traveller A27
State: North Carolina
Posts: 2,407
THOR #17765
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Do you have a 7 pin plug back by the hitch?
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12-14-2020, 04:07 PM
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#10
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Senior Member
Brand: Thor Motor Coach
Model: ACE 33.1
State: Nevada
Posts: 316
THOR #21278
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I have the 7-pin (round plug), as well as a 4-pinplug right underneath the round plug.
I am trying very hard to find the factory plug (if there is one) so I can plug my Prodigy P3 brake controlled and start pulling my car and my EZ tow dolly (with electric brakes).
I looked into the wireless brake controller. Aside from additional expense, I think it will require me to mount it on the trailer itself.
I also am trying to avoid paying and electrician to wire anything into my coach as we are DEFINITELY getting something to flat tow sometime next year. We will have to sell our tow dolly by then. That is the reason why I am trying to avoid additional expenses at this time and use our current tow set-up (if I can only find that plug).
Quote:
Originally Posted by Jimbo56
Do you have a 7 pin plug back by the hitch?
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12-14-2020, 04:24 PM
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#11
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Senior Member
Brand: Thor Motor Coach
Model: Citation
State: Texas
Posts: 920
THOR #8139
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If you can take the gauge cluster out it "should" be labeled and buried in the wires on top of the steering column. Or move the seat all the way back and look on top of the column..
It will be pretty hard to see!
If you find it in another location please let us know
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12-14-2020, 04:42 PM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: ACE 33.1
State: Nevada
Posts: 316
THOR #21278
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I am going to try one more time today when I get home from work. On my 2015 Forester (Ford E450), it was behind the coin tray. I had to remove the coin tray and it was right behind it. I really don't understand why Ford have to hide the plug when they know (or maybe not) that the owner might be using that plug to tow something.
Quote:
Originally Posted by abjbrtd
If you can take the gauge cluster out it "should" be labeled and buried in the wires on top of the steering column. Or move the seat all the way back and look on top of the column..
It will be pretty hard to see!
If you find it in another location please let us know
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12-14-2020, 08:47 PM
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#13
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Senior Member
Brand: Thor Motor Coach
Model: Freedom Traveller A27
State: North Carolina
Posts: 2,407
THOR #17765
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Quote:
Originally Posted by ador
I have the 7-pin (round plug), as well as a 4-pinplug right underneath the round plug.
I am trying very hard to find the factory plug (if there is one) so I can plug my Prodigy P3 brake controlled and start pulling my car and my EZ tow dolly (with electric brakes).
I looked into the wireless brake controller. Aside from additional expense, I think it will require me to mount it on the trailer itself.
I also am trying to avoid paying and electrician to wire anything into my coach as we are DEFINITELY getting something to flat tow sometime next year. We will have to sell our tow dolly by then. That is the reason why I am trying to avoid additional expenses at this time and use our current tow set-up (if I can only find that plug).
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Well I had 2 plugs. The one that was high on the steering column was the diagnostic plug. Way down low, right where the steering column comes through the floor, I found the brake/light/trailer plug. I had to buy a Ford harness adaptor to get the controller plug to match up. It was a specific 10” pigtail made for my brand controller.
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12-22-2020, 03:42 AM
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#14
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Senior Member
Brand: Thor Motor Coach
Model: ACE 33.1
State: Nevada
Posts: 316
THOR #21278
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OK folks. Problem solved. I wanted to post it here so that if other people have the same problem in the future, I hope this can help.
The "Brake Control Plug" is that "4 pin grey connector" on the right/bottom side of this picture (as I have previously suspected).
This is the "Ford Supplied pig-tail connector" that came in the bag, with my manuals.
I purchased this "Tekonsha Pig-tail connector", that I spliced into the Ford Pig-tail connector. Also shown in the picture is how I connected the wires, using the decripstion on "Tekonsha's Color Code and Description"..... AND "Ford Pig Tail's Color Code and Description". (I hand wrote the corresponding codes to the right side of the desscription in Tekonsha's docuement).
I also purchased this Curt 7-pin Tester from Amazon. Everything checked out and function after I plugged all connectors and after I plug the Teckonsha Brake Controller.
WE ARE NOW READY TO TOW OUR DOLLY/CAR.
Thank you all for your help. I am hoping this help other folks here in the forum.
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12-22-2020, 12:06 PM
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#15
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Senior Member
Brand: Thor Motor Coach
Model: Freedom Traveller A27
State: North Carolina
Posts: 2,407
THOR #17765
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Great work! Glad you figured it out. The pictures will surely help someone else in the future.
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05-27-2021, 01:01 PM
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#16
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Junior Member
Brand: Still Looking
State: North Carolina
Posts: 1
THOR #23592
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Hi All,
I am unable to see the pictures which would help me out. Struggling to locate this dang connector on my 2021. TIA
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05-27-2021, 02:15 PM
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#17
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Site Team
Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,726
THOR #1469
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Quote:
Originally Posted by Thehunts
Hi All,
I am unable to see the pictures which would help me out. Struggling to locate this dang connector on my 2021. TIA
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Usually in the location of and oftentimes zip tied to the steering column.
__________________
Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
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06-01-2021, 06:20 AM
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#18
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Junior Member
Brand: Thor Motor Coach
State: California
Posts: 1
THOR #23664
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Thank you for the info and pictures. I too bought the Tekonsha Ford harness thinking that was the correct plug and play. I could only find those three harnesses and will be splicing my Ford harness that was with the manuals to the tekonsha harness.
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04-15-2022, 07:50 PM
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#19
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Junior Member
Brand: Thor Motor Coach
State: Florida
Posts: 1
THOR #26526
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Hi Ador,
Do you know the part number for the ford supplied pig tail. I just bought a used ACE that did not come with one. Please let me know if your pig tail has a part number on it. Thanks.
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04-15-2022, 09:03 PM
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#20
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Senior Member
Brand: Thor Motor Coach
Model: ACE 33.1
State: Nevada
Posts: 316
THOR #21278
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Looking at some old pictures from my phone, I read "LU94 14A348 B6EJ0" from FoMoCo. The last one maybe a "ZERO" or Letter "O".
Hope this help.
Quote:
Originally Posted by PapaSmurf
Hi Ador,
Do you know the part number for the ford supplied pig tail. I just bought a used ACE that did not come with one. Please let me know if your pig tail has a part number on it. Thanks.
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__________________
2021 Thor ACE 33.1
2015 Forest River Forester 2861DS
2012 Milan Eclipse
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