Trailer wiring

Electronic systems, stereo and Holden iQ, wiring, it all goes here....
philofab
Posts: 47
Joined: Thu Jul 27, 2017 11:10 am

Trailer wiring

Post by philofab »

Does anyone have the wiring connector location or pinout for trailer lighting converter box? Is it the 4 pin plug above the drivers side battery taped to the loom?
philofab
Posts: 47
Joined: Thu Jul 27, 2017 11:10 am

Re: Trailer wiring

Post by philofab »

Ended up using this:

http://curtmfg.com/part/59190

To wire up a four flat trailer plug on the car. Ignore the 3 wire to 2 wire thing. On these cars you don't use the brake input. Honestly any converter would work. I'm not sure how tough the turn signal switch is so I'd recommend against wiring directly.

The wiring is located above the battery on the passenger side. Wire colors are standard GM (same as American trailer UL color coding). Yellow for left, green for right, brown for running lamps.
philofab
Posts: 47
Joined: Thu Jul 27, 2017 11:10 am

Re: Trailer wiring

Post by philofab »

Photos of install wiring.
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philofab
Posts: 47
Joined: Thu Jul 27, 2017 11:10 am

Re: Trailer wiring

Post by philofab »

Power wiring
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philofab
Posts: 47
Joined: Thu Jul 27, 2017 11:10 am

Re: Trailer wiring

Post by philofab »

Seperated wires are the light signals.
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Sanford
Posts: 356
Joined: Mon Dec 12, 2016 9:38 pm
Location: Texas Gulf Coast

Re: Trailer wiring

Post by Sanford »

Since you have added trailer wiring, I assume you have a trailer hitch. Do you have any pictures that were taken during the hitch installation, if my assumption is correct? I don't tow with a car much since I have an old 3/4" Ford for towing duty, but it is nice to have the ability to tow a light trailer.

David
philofab
Posts: 47
Joined: Thu Jul 27, 2017 11:10 am

Re: Trailer wiring

Post by philofab »

Sanford wrote:Since you have added trailer wiring, I assume you have a trailer hitch. Do you have any pictures that were taken during the hitch installation, if my assumption is correct? I don't tow with a car much since I have an old 3/4" Ford for towing duty, but it is nice to have the ability to tow a light trailer.
There is a post on here and a better post on the G8 board with info and good photos.

I didn't bother with photos.
smwalker
Administration Staff
Posts: 2201
Joined: Mon Jul 29, 2013 1:44 am
Location: Azusa,CA

Re: Trailer wiring

Post by smwalker »

This seems to be for the 11-13 only, not finding a reference to this plug in the 14+ models.
Connector pictured above is X456 located above the battery - #5 in this pic:

Image

Not able to find any information on what the wires inside it are. That would be useful if anyone has mapped what wires are in there.
Steve Walker
Azusa, CA
'11 PPV 9C3 Huron White
Ilikemtb999
Posts: 220
Joined: Wed Feb 06, 2019 11:49 pm

Re: Trailer wiring

Post by Ilikemtb999 »

My 14 came with a receiver and a 4 pin installed. I can snap pictures of the install.
SSpeedracer
Posts: 149
Joined: Tue Mar 13, 2018 6:34 pm

Re: Trailer wiring

Post by SSpeedracer »

Ilikemtb999 wrote: Tue Jul 09, 2019 8:33 am My 14 came with a receiver and a 4 pin installed. I can snap pictures of the install.
Please upload pictures. Thanks.
2016 Caprice
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