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03-03-2019, 01:56 PM
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#1
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Senior Member
Join Date: Jul 2014
Location: SouthWest Michigan
Posts: 5,977
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2019 F-150 Tailgate LEDs
I have tried to add Tailgate LEDs to my 2019 F-150 with the 4 Pin Plugin,
The truck keeps telling me the Trailer is Disconnected ???
Has anyone had this problem ???
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03-03-2019, 02:10 PM
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#2
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Senior Member
Join Date: Jun 2016
Posts: 5,058
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Doesn't surprise me. Computer is monitoring power thru the connectors. If all circuits aren't registering to the expected value, it'll post the warning. Lots of folks have reported similar issues that were related to the trailer brakes.
__________________
Al
I am starting to think, that I will never be old enough--------to know better.
Tolerance will reach such a level that intelligent people will be banned from thinking so as not to offend the imbeciles. Fyodor Mikhailovich Dostoevsky, Russian Novelist
S.E. Mich. Flagstaff 26FKWS / 2022 F-150 3.5 EcoBoost SCrew Propride
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03-03-2019, 11:53 PM
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#3
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Senior Member
Join Date: Aug 2016
Posts: 420
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Yeah your going to struggle with this. The truck monitors trailer light draw to let you know if there is a light out or a malfunction. It’s not going to like you plugging into it and only using a couple of the connections. Even then if it did like it you would have a trailer connected as far as it’s concerned which would disable your cross traffic and blind spot alerts.
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03-04-2019, 12:28 AM
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#4
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Senior Member
Join Date: Jul 2017
Location: California
Posts: 7,616
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If you really want them..not sure why...you likely have to tap into your regular taillight wires.
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03-04-2019, 09:10 AM
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#5
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Senior Member
Join Date: Jul 2014
Location: SouthWest Michigan
Posts: 5,977
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Thanks Guys !!!
I thought the answer was going to be to Hard Wire them,
not sure I am going that far ?
I really like having all the stop lights that are available !!!
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03-04-2019, 09:38 AM
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#6
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Senior Member
Join Date: Aug 2018
Location: Richmond VA
Posts: 4,554
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You probably need LEDs with resistors -- commonly available as replacements for the LED lights that will "fast blink" when used in turn signals, etc. The brake Ford controller can be fooled the same way.
Pretty sure you can also just turn off the brake controller when not needed so it's not detecting the low resistance.
And there may be settings in Forscan you can make to cure this, I've not looked closely at the F150 Forscan settings. The Ford F150 Forscan forum will have details I'm sure.
-- Chuck
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03-04-2019, 09:41 AM
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#7
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Senior Member
Join Date: Jul 2014
Location: SouthWest Michigan
Posts: 5,977
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Quote:
Originally Posted by Chuck_S
You probably need LEDs with resistors -- commonly available as replacements for the LED lights that will "fast blink" when used in turn signals, etc. The brake Ford controller can be fooled the same way.
Pretty sure you can also just turn off the brake controller when not needed so it's not detecting the low resistance.
And there may be settings in Forscan you can make to cure this, I've not looked closely at the F150 Forscan settings. The Ford F150 Forscan forum will have details I'm sure.
-- Chuck
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Thanks Chuck !!!
Think I will return them while I still can !!!
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03-04-2019, 05:32 PM
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#8
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Member
Join Date: Sep 2016
Posts: 89
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Here is a great place that should have more info on this mod. https://www.f150forum.com/
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03-04-2019, 05:37 PM
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#9
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Senior Member
Join Date: Aug 2018
Posts: 159
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I put them on my 2015 F 150 & had the same problem. I hard wired them into the trucks tail lights. Not that hard to do. My lights have the back up LED's built into them & boy do they light things up !
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03-05-2019, 08:49 AM
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#10
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Senior Member
Join Date: Jul 2014
Location: SouthWest Michigan
Posts: 5,977
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Co. that sells the ones I bought told me they had never heard of this problem !!!
B S !!!
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03-05-2019, 09:30 AM
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#11
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Grammar Pedant
Join Date: Aug 2017
Location: Frederick, CO
Posts: 1,580
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For the Super Duty crowd, there is a factory LED strip that sits between tailgate and rear bumper. People generally tie into the license plate light. Putting a load on the trailer wiring is known to cause the truck to mistakenly believe a trailer is connected. I've not done this mod, but know of this issue simply from being active on a Ford truck forum.
It's one of the reasons why I always recommend that people go to truck forums to learn more about trucks ... and, when I'm on truck forums, I'd recommend people go to the RV forums to learn more about RVs. Sure, many people here have trucks and can answer the questions, but nothing beats a targeted forum on subject X when you want info on subject X.
Good luck.
__________________
Every time you use an apostrophe to make a word plural, a puppy dies.
TV: 2019 F-350 Lariat 4WD CCSB 6.7 PSD 3.55, 3,591 lb payload
Former RV: 2018 Rockwood Mini Lite 2504S
Former RV: 2007 Fleetwood/Coleman Utah
Former TV: 2005 F-150 King Ranch 4WD SCrew 5.4L Tow Package
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03-05-2019, 09:38 AM
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#12
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Senior Member
Join Date: Jul 2014
Location: SouthWest Michigan
Posts: 5,977
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Quote:
Originally Posted by 67L48
For the Super Duty crowd, there is a factory LED strip that sits between tailgate and rear bumper. People generally tie into the license plate light. Putting a load on the trailer wiring is known to cause the truck to mistakenly believe a trailer is connected. I've not done this mod, but know of this issue simply from being active on a Ford truck forum.
It's one of the reasons why I always recommend that people go to truck forums to learn more about trucks ... and, when I'm on truck forums, I'd recommend people go to the RV forums to learn more about RVs. Sure, many people here have trucks and can answer the questions, but nothing beats a targeted forum on subject X when you want info on subject X.
Good luck.
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Tying to the Lic light would only give you tail lights,
No Break or turn signals !!!
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03-08-2019, 04:44 PM
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#13
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Junior Member
Join Date: Jun 2015
Location: Ontario Canada
Posts: 19
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Tailgate light bar
Ford changed something in the 2015 and up models. My light bar worked on my 2014 F150 but not my 2017 F250. I had to hardwire it. Pull the taillights to get power, connections are out of the weather there.
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03-08-2019, 05:08 PM
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#14
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Senior Member
Join Date: Aug 2018
Location: Richmond VA
Posts: 4,554
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The CANBUS and computer controls more items than before. The headlight switch doesn't turn on the lights, it tells the computer to turn on the lights. Same effect, of course, but the computer can do things like detect a brake light out, trailer disconnect, etc. Non OE light bulbs can confuse the computer.
Heck, I didn't know there was no mechanical connection between my gas pedal and engine for a couple of years until I went looking for it one afternoon. 2007 Expedition. 2017 Expedition, and every other car in our extended family, lacks the mechanical connection as well. Drive-by-Wire.
-- Chuck
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03-09-2019, 08:39 AM
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#15
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Senior Member
Join Date: Jul 2014
Location: SouthWest Michigan
Posts: 5,977
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Quote:
Originally Posted by Chuck_S
The CANBUS and computer controls more items than before. The headlight switch doesn't turn on the lights, it tells the computer to turn on the lights. Same effect, of course, but the computer can do things like detect a brake light out, trailer disconnect, etc. Non OE light bulbs can confuse the computer.
Heck, I didn't know there was no mechanical connection between my gas pedal and engine for a couple of years until I went looking for it one afternoon. 2007 Expedition. 2017 Expedition, and every other car in our extended family, lacks the mechanical connection as well. Drive-by-Wire.
-- Chuck
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I hear ya !!!
I could not believe the truck new there was no trailer !!!
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