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  #1057  
Old 07-29-2014, 03:36 AM
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Re: The Towing thread

So yes. Sweet.
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  #1058  
Old 07-29-2014, 05:16 AM
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Re: The Towing thread

Dealership in Melb on Ebay does the my14 bar and wiring kit foe 740.
Guy in WA does the my13 one for 540 I think
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  #1059  
Old 07-29-2014, 05:39 AM
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Re: The Towing thread

Quote:
Originally Posted by Barboots View Post
That's correct Bob. All aspects of wiring in trailer requisites are more difficult. In the US there is the trailer module, but Cheap Australia didn't spec it...

So like the MY11-13, you can't wire brake controllers to the brake switch. However you can "tap" most of the required wiring circuits around where the MY11-13 plug is. Unfortunately, on MY14 all brake light circuits are individual, so if you only tap the left brake light for the controller input, you'll only get a left brake light when manually using the controller.

Now I'd like to say "so what", but I've heard there's been decent checks including such things by RTA / Transport / etc. I don't want the annoyance of perhaps having to get in there again and sort it out later. Do it once, do it right.

Cheers,
Steve
i admire the sentiment Steve, and likely you have modified the wiring by now…..I have a 2012 and no issues - but - if I can make a comment on the issue you are dealing with…..
The only time you will ever go for the manual lever on the brake controller is when your van trailer is attached.
The brake brake lights on that unit will work. With a van on whether both the vehicle brake lights come on is not likely to be an issue IMHO.
Any authority picking that as a detail in a check is getting microscopic (and anal). Rumours abound regarding "checks" but don't seem to have much substance…..
With my Jeep the philosophy has been to keep any accessory wiring completely separate from tthe original system. In many years of off road and vehicle accessory fitment it has been add ons that most likely give problems in the scrub.
I don't want to give Jeep any opportunity to say that a modification (and particularly to the electrics) - is the cause of any glitch or failure.
Your choice of a P3 is highly unlikely to require you to go for the manual lever - if it is set up correctly.

in any event - if you do - whether both your brake lights work on the vehicle will be the least of your concerns!
Based on my experience and 50K odd of towing with our Jeep in all sorts of conditions i don't know if your risk/benefits analysis makes the work and mods involved, worth while.
John
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  #1060  
Old 07-29-2014, 07:35 AM
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Re: The Towing thread

Quote:
Originally Posted by John47 View Post
i admire the sentiment Steve, and likely you have modified the wiring by now…..I have a 2012 and no issues - but - if I can make a comment on the issue you are dealing with…..
The only time you will ever go for the manual lever on the brake controller is when your van trailer is attached.
The brake brake lights on that unit will work. With a van on whether both the vehicle brake lights come on is not likely to be an issue IMHO.
Any authority picking that as a detail in a check is getting microscopic (and anal). Rumours abound regarding "checks" but don't seem to have much substance…..
With my Jeep the philosophy has been to keep any accessory wiring completely separate from tthe original system. In many years of off road and vehicle accessory fitment it has been add ons that most likely give problems in the scrub.
I don't want to give Jeep any opportunity to say that a modification (and particularly to the electrics) - is the cause of any glitch or failure.
Your choice of a P3 is highly unlikely to require you to go for the manual lever - if it is set up correctly.

in any event - if you do - whether both your brake lights work on the vehicle will be the least of your concerns!
Based on my experience and 50K odd of towing with our Jeep in all sorts of conditions i don't know if your risk/benefits analysis makes the work and mods involved, worth while.
John
John47, I appreciate your valued and regular input here, but I slightly disagree!!

I have my controller (it's removable) fitted to the centre console and use the manual switch at times. If descending a steepish hill and needing to stop, or on a wet road, I apply some manual van braking just prior to applying the Jeep brakes, just to ensure any 'pushing' by the van prior to the controllers pendulum effect is reduced. I also hold the van brakes 'on' manually, then release, as I power off on hill starts.

So for me I would prefer both vehicle brake lights to operate so that other drivers who are beside the van can see the Jeep lights operating.

Regards
nrb1748
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  #1061  
Old 07-29-2014, 07:07 PM
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Re: The Towing thread

Quote:
Originally Posted by nrb1748 View Post
I have my controller (it's removable) fitted to the centre console and use the manual switch at times. If descending a steepish hill and needing to stop, or on a wet road, I apply some manual van braking just prior to applying the Jeep brakes, just to ensure any 'pushing' by the van prior to the controllers pendulum effect is reduced. I also hold the van brakes 'on' manually, then release, as I power off on hill starts.

So for me I would prefer both vehicle brake lights to operate so that other drivers who are beside the van can see the Jeep lights operating.

Regards
nrb1748
My comment was made in the context of my preferences and experience…..my P3 is in the cubby and I very, very rarely touch it. One quick press to raise the boost on a long steep downhill or in really aggressive city traffic - the only input i make.
Ive never grabbed for the lever (and hope I don't have to).

If your foot is on the brake - then all lights are lit.

For me, the potential for an argument with Jeep warranty service because wiring has been modified is the overriding reason I wouldn't go down that track.
Certainly others won't take that view - fair enough.
John
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  #1062  
Old 07-29-2014, 08:19 PM
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Re: The Towing thread

I must be missing something in this thread I think as I can't understand why you wouldn't pick up the brake signal from the factory trailer plug (pin 6 from memory) to run the brake controller rather then wiring diodes, relays etc into the brake lights?

This is how's it's done on my 2012 because from what I understand Canbus doesn't monitor the resistance in this cable because it can never know what loads you'll plug in via the trailer plug and it gives a decent 12v supply to run the trailer brake lights.

If anyone could clarify what the issue is it would be much appreciated because I'm considering an upgrade at the moment to an MY14.

.
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  #1063  
Old 07-29-2014, 08:41 PM
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Re: The Towing thread

Quote:
Originally Posted by Barboots View Post
That's correct Bob. All aspects of wiring in trailer requisites are more difficult. In the US there is the trailer module, but Cheap Australia didn't spec it...

So like the MY11-13, you can't wire brake controllers to the brake switch. However you can "tap" most of the required wiring circuits around where the MY11-13 plug is. Unfortunately, on MY14 all brake light circuits are individual, so if you only tap the left brake light for the controller input, you'll only get a left brake light when manually using the controller.

Now I'd like to say "so what", but I've heard there's been decent checks including such things by RTA / Transport / etc. I don't want the annoyance of perhaps having to get in there again and sort it out later. Do it once, do it right.

Cheers,
Steve
That sucks! The earlier Aussie models came with the Trailer Tow Group as standard, That had as I recall, trailer sway control, HD engine cooling and a 220A alternator. We did not get the blue brake controller plug under the dash nor the trailer plug on the right near the rear bumper like in the States. Instead we got a grey trailer plug hidden above the left rear wheel arch. My guess is that the wire lengths were specified for a LHD vehicle. When they came to manufacture the wiring harness for RHD vehicles, some mental giant decided that the trailer plug should be on the other side but, whoops, the wires aren't long enough. At least they gave us a decent trailer harness. So, am I correct in thinking that Aussie MY14s do not now come with the Trailer Tow Group as standard? Also, did the MY14 trailer harness ever eventuate?
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  #1064  
Old 07-29-2014, 11:13 PM
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Re: The Towing thread

I thought the issue between the MY11-13 and the MY14's was basically due to the LED lighting on the MY14., and as a result, the MY14's had a individual feed to Canbus, unlike the earlier WK2's..
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  #1065  
Old 07-29-2014, 11:13 PM
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Re: The Towing thread

This is the US Option:
Trailer Tow Group IV - Heavy-duty engine cooling, engine oil cooler, 220-amp alternator, rear load-leveling suspension (not available with Quadra-Lift air suspension system), full-size spare tire, steel spare wheel, Class IV receiver hitch with seven- and four-pin wiring harness

I understood that we received as standard on all 4x4 models - Heavy-duty engine cooling, engine oil cooler, 220-amp alternator, rear load-leveling suspension AND Heavy-duty brakes. So miss out on hitch receiver of course and wiring harness. The hitch is an obvious omission, and that is why we miss out on the wiring harness.
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  #1066  
Old 07-30-2014, 06:29 AM
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Re: The Towing thread

Quote:
Originally Posted by Jasman View Post
I must be missing something in this thread I think as I can't understand why you wouldn't pick up the brake signal from the factory trailer plug (pin 6 from memory) to run the brake controller rather then wiring diodes, relays etc into the brake lights?

This is how's it's done on my 2012 because from what I understand Canbus doesn't monitor the resistance in this cable because it can never know what loads you'll plug in via the trailer plug and it gives a decent 12v supply to run the trailer brake lights.

If anyone could clarify what the issue is it would be much appreciated because I'm considering an upgrade at the moment to an MY14.

.
The CANBUS recognises each brake light individually. The brake controller on my MY2014 is wired from the brake light wire at the trailer plug. Because the Jeep trailer plug wiring loom is tapped into the left brake light, when you 'manually' apply the caravan brakes with the brake controller, only the left side brake light works on the Jeep. It's not a big issue but others have suggested to comply with Regulations, all brake lights on the tow vehicle should work when the brake controller is manually operated. With normal foot brake operation all brake lights operate on the vehicle.
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  #1067  
Old 07-30-2014, 07:01 AM
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Re: The Towing thread

Quote:
Originally Posted by nrb1748 View Post
The CANBUS recognises each brake light individually. The brake controller on my MY2014 is wired from the brake light wire at the trailer plug. Because the Jeep trailer plug wiring loom is tapped into the left brake light, when you 'manually' apply the caravan brakes with the brake controller, only the left side brake light works on the Jeep. It's not a big issue but others have suggested to comply with Regulations, all brake lights on the tow vehicle should work when the brake controller is manually operated. With normal foot brake operation all brake lights operate on the vehicle.
Cool, thanks for the answer. I also think I could live with that as the end of the day you'll have a trailer blocking the jeeps lights anyway and it's brake lights will be shining bright I would hope.
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  #1068  
Old 08-01-2014, 07:40 PM
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Re: The Towing thread

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Originally Posted by Jasman View Post
Cool, thanks for the answer. I also think I could live with that as the end of the day you'll have a trailer blocking the jeeps lights anyway and it's brake lights will be shining bright I would hope.
Jasman,

Not strictly true. Just yesterday I was two cars behind a Jeep GC towing a Glider Trailer that was long and skinny and I could see the Jeeps brake lights and indicators working, as well as those on the trailer.

I grant you though, that this is a somewhat unique towing situation, but we should not limit our thinking to only caravan towing. The notion that the Jeeps rear lights will be obscured from following motorists vision (by the caravan/trailer) and it therefore doesn't matter what they are or are not doing, is not correct.

Gr8Ness
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