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Old 05-14-2021, 06:52 PM
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Default Help needed - trailer wiring for mini cooper

I'm trying to wire my daughter's mini cooper for a trailering harness. The directions included aren't anything like the parts I have. I have no clue how to figure this out on my own.

Anyone around this weekend that I could drive to for help?
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Old 05-15-2021, 07:45 PM
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That was fun....
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Currently
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- 1989 944S2
- 2012 Cayman R (also the wife's)
- 2000 Boxster S (the wife's)

- 1995 993 (garage queen)
- 1979 RX7 enduro
- 2017 F350 (tow monster)

Gone but not forgotten
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Old 05-16-2021, 10:53 PM
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I assume Tony got it done for you. There are detailed instructions and a video on eTrailer.com - I had to do this for my wife's Highlander, as the optional trailer hitch only had a 4-wire connector. Not a simple job if you want to hide the wiring well, but it's held up for 5 years so far.
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Old 05-17-2021, 07:14 AM
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Tony took care of me. I couldn't have done it myself. We had instructions, but they were for right hand drive cars.
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Old 05-17-2021, 07:41 AM
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Quote:
Originally Posted by John Clay View Post
Tony took care of me. I couldn't have done it myself. We had instructions, but they were for right hand drive cars.
OK now this makes no sense. Wires don't care. Were the colors different or something? Wasn't this just a disassemble the taillight, tap into the wires operation?
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Old 05-17-2021, 04:38 PM
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Originally Posted by VaSteve View Post
OK now this makes no sense. Wires don't care. Were the colors different or something? Wasn't this just a disassemble the taillight, tap into the wires operation?
Tony could tell you what the confusions from a standard install were. My head was spinning a bit. I didn't know how to figure out which wire does what or tap into the wires. Don't have the tools either.
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Old 05-17-2021, 07:00 PM
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If the trailer has surge brakes, it's just tap into the tail lights (both of them, for turn signals). But if you need to hook in a brake controller, it's more complicated. The parts in the instructions that look hard are really easy. Running the wires safely to the rear of the car takes planning, time, and band-aids. https://www.etrailer.com/faq-install...m-scratch.aspx.

Peter
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Peter (not "Pete") K.
IndexFingerRacing.com

1992 Miata ("SSM") race car
2016 Toyota Highlander (wife's DD and my new tow vehicle
2017 VW GTI SE (DD)

Gone and missed:
2009 911 C2S Coupe "The Green Car"
2004 Toyota Prius - sold to son's girlfriend
2006 Dodge Durango - sold to a Dorki
2003 Acura MDX - Just shy of 200K
86 Black 911 Coupe race car (owned 2010-2016)
86 Gold 911 Targa (owned 1998-2012)
82 WineRedMetallic 911 Targa (owned 1986-7)
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  #8  
Old 05-18-2021, 01:01 PM
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We eventually got it figured out. The problem started when John installed the wiring module on the "passenger" side of the vehicle, per the instructions. Unfortunately, based upon the UK instructions, that should have been on the left rear panel. John installed on the right rear panel, per a left-hand drive version of the car. Not a big deal, except that most wires on the module were short, with only 2 wires being long enough to reach the other side. Once we figured out what was happening, we were able to make it work. The module was attached with VERY strong adhesive tape, so we decided to not remove/relocate it. In the end, as most of the relevant wires were on both sides (except for the 12V source) we only had to "re-direct" the turn signal wires, so the correct ones were lighting on the trailer plug.
__________________
- Tony P.

Currently
- 1984 944 SP2 racer
- 1977 911 KM Special vintage racer
- 1989 944S2
- 2012 Cayman R (also the wife's)
- 2000 Boxster S (the wife's)

- 1995 993 (garage queen)
- 1979 RX7 enduro
- 2017 F350 (tow monster)

Gone but not forgotten
- 1986 944 (under new mgmt)
- 1991 944S2 (in car heaven...)
- 2001 Chevy Suburban 2500 (FIL's beast now)

"Keep your eyes on the road and your hands upon the wheel." - The Doors
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