2015 x5 35i

X5NM · 07-09-2023, 02:03 PM

Debating on OEM wiring setup or https://www.etrailer.com/Trailer-Wir...leID=201530388

what is the benefit to OEM wiring harness with module or basic wiring kit?

scotty339 · 07-09-2023, 05:18 PM

Search. Its been talked about before.

What are you pulling? Do you need trailer brakes or is it a small utility trailer and you just need lights?

German cars can also be finicky with electronics. Are you a confident DIY guy if you go the universal route?

I did OEM for the module and harness and while a bit more $ was clean and straight foward to get done.

The 4 pin for the trailer brake package may be pre wired already in your trunk fuse outlet. Decode your VIN and check for the prep package.

X5NM · 07-09-2023, 11:31 PM

I may pull my racetrack and add trailer brakes to it. mainly my 6x12 enlosed motorcycle out of town for races

beattiecj · 07-10-2023, 08:25 PM

Reference this and please get the oem wiring and tow module it’s plug and play:

trailer wiring

X5NM · 07-11-2023, 11:53 AM

thats awesome thank you

X5NM · 07-18-2023, 12:13 PM

so i got the coding done and getting an error for the wiring. Terminal 30b. have you heard of it?

beattiecj · 07-20-2023, 06:25 AM

Quote:

Originally Posted by X5NM

so i got the coding done and getting an error for the wiring. Terminal 30b. have you heard of it?

You might have a fuse blown or unplugged? This is out of my realm.

https://youtu.be/9Jh5ePylMkQ

07-09-2023, 02:03 PM	#1
X5NM Enlisted Member 3 Rep 42 Posts Drives: 2015 X5 xDrive35i Join Date: Jun 2020 Location: New mexico iTrader: (0)	2015 x5 35i - trailer wiring Debating on OEM wiring setup or https://www.etrailer.com/Trailer-Wir...leID=201530388 what is the benefit to OEM wiring harness with module or basic wiring kit?
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07-09-2023, 05:18 PM	#2
scotty339 First Lieutenant 147 Rep 334 Posts Drives: 2015 BMW X5 x35i M-Sport Join Date: Jun 2020 Location: Edmonton, AB iTrader: (0)	Search. Its been talked about before. What are you pulling? Do you need trailer brakes or is it a small utility trailer and you just need lights? German cars can also be finicky with electronics. Are you a confident DIY guy if you go the universal route? I did OEM for the module and harness and while a bit more $ was clean and straight foward to get done. The 4 pin for the trailer brake package may be pre wired already in your trunk fuse outlet. Decode your VIN and check for the prep package. __________________ 2015 BMW X5 x35i \| M-Sport \| Alpine White
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07-09-2023, 11:31 PM	#3
X5NM Enlisted Member 3 Rep 42 Posts Drives: 2015 X5 xDrive35i Join Date: Jun 2020 Location: New mexico iTrader: (0)	I may pull my racetrack and add trailer brakes to it. mainly my 6x12 enlosed motorcycle out of town for races
	Appreciate 0 Quote

07-10-2023, 08:25 PM	#4
beattiecj First Lieutenant 131 Rep 305 Posts Drives: 2012 135i 2017 x5 35i 1988 e30 Join Date: Dec 2015 Location: NYC, Baltimore iTrader: (3)	Reference this and please get the oem wiring and tow module it’s plug and play: trailer wiring
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07-11-2023, 11:53 AM	#5
X5NM Enlisted Member 3 Rep 42 Posts Drives: 2015 X5 xDrive35i Join Date: Jun 2020 Location: New mexico iTrader: (0)	thats awesome thank you
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2015 x5 35i - trailer wiring

07-18-2023, 12:13 PM	#6
X5NM Enlisted Member 3 Rep 42 Posts Drives: 2015 X5 xDrive35i Join Date: Jun 2020 Location: New mexico iTrader: (0)	so i got the coding done and getting an error for the wiring. Terminal 30b. have you heard of it?
	Appreciate 0 Quote