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  #37  
Old 05-07-2014, 07:11 PM
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Re: Blue Ox Baseplate for Trailhawk

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Originally Posted by ldsoles1066 View Post
Yes, I did. Left Turn/Brake was Green/White. Left Tail was Yellow/White.
Right Turn/Brake was Yellow/White. Right Tail was Gray/White

The colors did not make sense to me but that is what I probed and it worked out.
Thank you for your prompt reply. Yes, it does seem strange - one would have thought the left and right tails would share a common code.

I have two further questions for you.

1) Are you running a constant 12v from the coach to the Jeep battery to maintain its charge during a long tow? I assume this would be via a diode and fuse. On our last toad (a Wrangler) we had an Invisibrake set up which fed the Jeep battery when the tail lights were on. For the Cherokee, I am considering fitting the RViBrake2 set up.

2) On this 3-wire set up, what happens when the coach is sending a turn signal at the same time as it is braking? The supplementary brake will activate the Jeep's own brake lights and these presumably would override the turn signal shown by the Jeep. Do you have any thoughts on this?

Martin
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  #38  
Old 05-07-2014, 09:31 PM
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Re: Blue Ox Baseplate for Trailhawk

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Originally Posted by MartinC View Post
I have two further questions for you.

1) Are you running a constant 12v from the coach to the Jeep battery to maintain its charge during a long tow? I assume this would be via a diode and fuse. On our last toad (a Wrangler) we had an Invisibrake set up which fed the Jeep battery when the tail lights were on. For the Cherokee, I am considering fitting the RViBrake2 set up.

2) On this 3-wire set up, what happens when the coach is sending a turn signal at the same time as it is braking? The supplementary brake will activate the Jeep's own brake lights and these presumably would override the turn signal shown by the Jeep. Do you have any thoughts on this?

Martin
I am going to run a fused 12v wire from the RV battery to the trailer connector which will carry the 12v to front of the Jeep connector and then to a cigarette lighter plug up under the dash somewhere. I don't know anything about the RViBrake2 setup but I am going to use the Blue OX Patriot supplemental brake which plugs in to a cigarette lighter plug and sits on the floor in front of the seat and pushes on the brake pedal. That is why I want to have a cigarette lighter plug powered by the RV so I don't drain the battery on the jeep.

On my setup, the supplemental brake does not activate the jeep brake lights since the jeep is not in ACC or Run mode so there is not any conflict between the RV blinker and supplemental brakes. It will use RV brakes or signals when being towed and Jeep system when not towed. As far as any thoughts on a solution, sorry but I don't have any ideas. Just am not familiar with RViBrake2 and how it works.
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  #39  
Old 05-07-2014, 09:44 PM
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Re: Blue Ox Baseplate for Trailhawk

MartinC,

I started looking at the RViBrake2 and it looks like it works very similar to the Blue Ox Patriot. I don't think that it will activate the brake lights either when it brakes since if I read the user guide correctly then the Toad is not running or in ACC mode like the instructions for the Blue Ox Patriot.

Basically it is the same setup as mine or at least I believe so.
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  #40  
Old 05-07-2014, 09:58 PM
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Re: Blue Ox Baseplate for Trailhawk

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Originally Posted by ldsoles1066 View Post
On my setup, the supplemental brake does not activate the jeep brake lights since the jeep is not in ACC or Run mode so there is not any conflict between the RV blinker and supplemental brakes. It will use RV brakes or signals when being towed and Jeep system when not towed. As far as any thoughts on a solution, sorry but I don't have any ideas. Just am not familiar with RViBrake2 and how it works.
The RViBrake2 seems to operate in a very similar fashion to the one you are fitting. It sits on the floor, hooks up to the brake pedal and a 12v socket. It relies on inertia detection from the coach braking to push on the brake pedal. Pushing that pedal will turn on the brake lights even when the engine switch is OFF. So there may be that conflict after all.

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  #41  
Old 05-07-2014, 10:37 PM
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Re: Blue Ox Baseplate for Trailhawk

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Pushing that pedal will turn on the brake lights even when the engine switch is OFF. So there may be that conflict after all.
I did not think that the brake lights would come on with the engine switch OFF but I went out and tried mine and they did. I am sitting here thinking about it. I don't think that there will be a conflict with the Jeep brake and the RV because it will be the same as when you are driving the Jeep and you have a left or right blinker on and hit the brakes. Looks to me that the same lights are used for the brake light and turn signal light so I think it will be fine. If I get the chance then I will test it out in the next day or so.
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  #42  
Old 05-07-2014, 10:43 PM
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Re: Blue Ox Baseplate for Trailhawk

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1) Are you running a constant 12v from the coach to the Jeep battery to maintain its charge during a long tow? I assume this would be via a diode and fuse.
I know you asked this of Idsoles1066 and I'm interested too. My CR-V was not wired for constant 12V. Towed it with the key switched to Accessory position to unlock the steering wheel and turn on the 12V outlet that powered my BrakeBuddy. I once drained the battery on an 8 hour stretch. The battery was old which I avoid now. I also do shorter runs now and start the engine at each stop to give the battery a charge. A constant 12V line would be nice, but not mandatory.

The 2014 Cherokee is a different animal though. It's turned off during tow. As per the owner's manual: "Shift the transmission into PARK, turn the engine OFF, and remove the key fob." So the only relevant draw on the battery is when the supplemental brake system activates and the brake lights turn on.

But I'll be including a constant 12V anyway to power the BrakeBuddy since it's easy to do as part of the process. My motor home's 7-wire connector has 12V + at the 1 o'clock pin and ground at the 7 o'clock pin. I'll run both in and not interconnect them with the Jeep's battery system. Just use them to power the BrakeBuddy.
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  #43  
Old 05-07-2014, 10:47 PM
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Re: Blue Ox Baseplate for Trailhawk

I am not planning on using a diode for the 12v from RV since I don't plan on connecting it to the Jeep but Just as a stand along plug for my supplemental brake. I will fuse it coming off my RV battery for 12v supply though.
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  #44  
Old 05-07-2014, 10:55 PM
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Re: Blue Ox Baseplate for Trailhawk

I will be interested in what you find out. As I see it, when you are driving the Jeep with the turn signal on and you hit the brakes, the Jeep's electronics will maintain the flashing. However, when being towed, in the same situation, that light will be fed from two sources - the coach 12v flasher and the Jeep's constant 12v. On the Wrangler, I installed 2 LED turn/brake/running lights embedded in the rear bumper and totally independent of the the toad's wiring so never had that problem. I am beginning to wonder if that approach may be more suitable (that's if I can find a place for the lights!)

Martin
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  #45  
Old 05-08-2014, 12:50 AM
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Re: Blue Ox Baseplate for Trailhawk

MartinC - I think you are right. The 12V from the toad's brake circuit will override the towing vehicle's blinking 12V. But this is only when the supplemental braking system activates the toad's brakes. Otherwise it works as desired.
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  #46  
Old 05-08-2014, 08:07 AM
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Re: Blue Ox Baseplate for Trailhawk

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Originally Posted by ldsoles1066 View Post
I am not planning on using a diode for the 12v from RV since I don't plan on connecting it to the Jeep but Just as a stand along plug for my supplemental brake. I will fuse it coming off my RV battery for 12v supply though.

I do like your idea of providing that 12v feed to the supplementary brake from the coach rather than the Jeep's battery. However, I notice that both you and Array are fitting a breakaway switch, the function of which is to apply the brakes on a run-away toad. Obviously the system would need on-board power to do this since breaking away from the coach's 12v feed would negate that function.

Personally, I don't see any need for this switch - those heavy steel cables should be more than capable of holding things together. I did fit the switch on the Wrangler but taped it up and swiveled it out of view after I read about someone who found his toad's brakes locked on because some vandal had removed the pin in a parking lot.

Regarding the turn/brake light issue, our problem is our coach has an exhaust brake which also turns on the brake lights, even when coasting. I was beginning to wonder if pulling a fuse would solve the problem but then I couldn't find one specific to brake lights. Here, I think I'm stepping into the dark world of CANBUS and modules etc - a place I don't want to visit.

Martin


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  #47  
Old 05-08-2014, 09:05 AM
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Re: Blue Ox Baseplate for Trailhawk

Rather than install a light system like i did on my last two Liberty's that always corroded, etc I have chosen to go with a new wireless system, magnet lights will go on the roof of my new TH and the transmittter just plugs in to the motor home plug. 4 double A's in each light will last up to 16 hours of continued use. LED bulbs that seem very bright. Will see how they work, may be worthless who knows. I use the BrakeBuddy with a dedicated plug and have never had a problem with jeep battery running down.
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Old 05-08-2014, 10:46 AM
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Re: Blue Ox Baseplate for Trailhawk

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Originally Posted by MartinC View Post
Obviously the system would need on-board power to do this since breaking away from the coach's 12v feed would negate that function.
Good point. I'm going to keep it simple and plug the BrakeBuddy into the Jeep's outlet. While the BrakeBuddy actuates the brake with compressed air, electronics are involved to trigger the action and I'm not sure there would be enough or any residual voltage to complete the job after a breakaway event. It's not worth the bother to test.

I appreciate this thread.
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