Installed OEM Tow Wiring Harness

Chiefthepup

Big Bend
Well-Known Member
First Name
Colt
Joined
Mar 26, 2023
Threads
38
Messages
450
Reaction score
755
Location
Washington
Vehicle(s)
Bronco sport
2022 Big Bend
Part # FT1Z15A416A
I’ll try and keep this short, no need for a full write up. I used the installation Manual provided by @bjbena for each and every step.

https://www.broncosportforum.com/forum/attachments/ft1z-15a416-a-pdf.17553/

First, this is definitely a doozy. Unless you’re confident with wiring I would not recommend diy-ing this. The wires are 20 or 22 gauge (I’m not positive) and very prone to damaging. So unless your an idiot like me and willing to damage essential functions than I would honestly just get the tekonsha or Curt or U-Haul plug and play harnesses lol.

Where the manual says to splice into the oem wiring (image #11) just wasn’t realistic due to it being a huge bundle of wires with zero play to solder and strip back. So I opted to splice in right before the wires entered the grommet going into the tail light housing.

I did confirm the wiring the manual references coincided with the actual wiring my vehicle had, with a probe into the taillight plug.

When removing the plastics be patient and take your time. Any time your about to hulk out stop and assess what might be catching.
Maybe I couldnt figure it out but I was unable to completely remove the cargo area plastics, from what I could tell I would have had to remove the rear seats to free them so I just worked with the space I had. Also, the manual states it but I’m gonna state it again
Disconnect your ground at battery! The lower A pillar plastics and B pillar plastics are close to air bag components. I think anyways. Lol

I am not a professional, I worked at a tractor dealership soldering telematic kits and various soldering for a few months.

I’m more than happy to answer any questions and provide any tips but honestly, just get a professional. This took me 4.5 hours. 30 mins was confirming the wiring on my vehicle and the wiring in the manual was the same. 30 mins was just staring at the oem wires petrified and assessing how I was gonna do it all without damaging anything.

Be easy on me. If anything looks shoddy it’s not out of laziness, I did everything as close to the book as I knew how/could.

Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6513

Lower B Pillar

Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6515


Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6521

Grommet on left hand floor of cargo area with tow plug wiring routed through

Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6518


Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6514

Lower B pillar removed
Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6516


Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6519


Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6520




Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6524


Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6522

Where manual says to splice into main harness

Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6536


Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6535


Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6526

Right taillight splice location

Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6533

Left taillight splice location

Ford Bronco Sport Installed OEM Tow Wiring Harness IMG_6525
Sponsored

 
Last edited:

PaulOinMA

Badlands
Well-Known Member
First Name
Paul
Joined
Jun 9, 2021
Threads
2
Messages
455
Reaction score
507
Location
MA
Vehicle(s)
'23 BS, '22 FE, '04 Audi TT, '66 Austin Moke
Wow! Impressive!

Reminded me of wiring an alarm system into my '83 Rabbit L forty years ago after the head unit was taken. Something I would never do now. :)
 
OP
OP
Chiefthepup

Chiefthepup

Big Bend
Well-Known Member
First Name
Colt
Joined
Mar 26, 2023
Threads
38
Messages
450
Reaction score
755
Location
Washington
Vehicle(s)
Bronco sport
Wow! Impressive!

Reminded me of wiring an alarm system into my '83 Rabbit L forty years ago after the head unit was taken. Something I would never do now. :)
Thanks! Definitely the gnarliest project I’ve ever taken on. I was a bit shakey while soldering hahaha I will never mess with a main harness again.
 

Jamie

Big Bend
Member
First Name
Jamie
Joined
Apr 1, 2022
Threads
2
Messages
22
Reaction score
17
Location
Richmond, Michigan
Vehicle(s)
2022 Bronco Sport
I bought a plug and play wire harness for my 2022 Bronco Sport Big Bend. The harness plugs in to existing sockets and no cutting wires. I also put on the factory hitch.
 
OP
OP
Chiefthepup

Chiefthepup

Big Bend
Well-Known Member
First Name
Colt
Joined
Mar 26, 2023
Threads
38
Messages
450
Reaction score
755
Location
Washington
Vehicle(s)
Bronco sport
I bought a plug and play wire harness for my 2022 Bronco Sport Big Bend. The harness plugs in to existing sockets and no cutting wires. I also put on the factory hitch.
That’s honestly what I should have done. The only pro to this harness, which In hindsight you could 100% do with the other harnesses, is the manual shows how to route the 12v power wire through the cab instead of tied underneath

Your smarter than I am haha
Sponsored

 
 







Top