Adding the Tow Package after purchase? - Page 6 - 2014+ Jeep Cherokee Forums
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post #51 of 60 (permalink) Old 08-02-2015, 10:42 AM
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I've hit 9th a couple of times, but not cruising. At legal highway speeds I'm in 8th., as is everyone else. At 70mph in 8th, a KL with the Tow Package will be running at a higher RPM than a KL without the Tow Package. This is not an opinion, it's a simple mathematic formula.

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post #52 of 60 (permalink) Old 08-02-2015, 11:18 AM
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Your math is... math. Equal speed in same gear = higher rpm for shorter final drive = less fuel economy.

Real world : we drive at different speeds all the time, unless you like to *cruise it* at the exact same speed all of the time because, well, it's very important to you, has special meaning or something...
Real world driving with a 9 speed not hitting top speed(edit > gear) kinda makes the math less... interesting, and brings physics to the forefront.
Looking at members' mpg numbers on these forums, it's hard to tell which is tall and which is short gearing, to me anyway. Statisitics are math, kinda. More data needed for accuracy of course, but it's fun to do quick observations.

If my KL is in 8th at, say, 56mph and a taller geared KL is in 7th, then... which is getting better mileage ? If the shorter geared KL can keep 8th with a slight head wind at 76mph and the taller geared can't... which one gets home with more gas left in the tank ? But yeah, if both need to go 80 and both stay in 8th gear, then the taller guy wins because that's the math.
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Last edited by Mark_; 08-02-2015 at 11:32 AM. Reason: edited speed to gear somewhere in there..
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post #53 of 60 (permalink) Old 04-09-2017, 07:41 PM
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I almost hate to revive this thread, and maybe it's answered elsewhere but, if you get the aftermarket factory wiring harness installed and flashed, does it come with the trailer brake controller? Curious because I've read other members adding an aftermarket controller to their KL' and also read they having it flashed you get the controller. I have added the OEM hitch and looking to add the wiring harness but want to figure in the controller in my budget if it isn't included in the harness.

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post #54 of 60 (permalink) Old 04-09-2017, 07:48 PM
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Originally Posted by Wheyman View Post
I almost hate to revive this thread, and maybe it's answered elsewhere but, if you get the aftermarket factory wiring harness installed and flashed, does it come with the trailer brake controller? Curious because I've read other members adding an aftermarket controller to their KL' and also read they having it flashed you get the controller. I have added the OEM hitch and looking to add the wiring harness but want to figure in the controller in my budget if it isn't included in the harness.

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No. The brake controller will have to be hardwired in. Only the factory system has the plug for a brake controller.

Not that it should matter because without the factory tow package you shouldn't be towing anything heavy enough to need a brake controller.


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post #55 of 60 (permalink) Old 04-09-2017, 07:58 PM
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Quote:
Originally Posted by Len1304 View Post
No. The brake controller will have to be hardwired in. Only the factory system has the plug for a brake controller.

Not that it should matter because without the factory tow package you shouldn't be towing anything heavy enough to need a brake controller.


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Normally I would say that's true, but after this trip to Moab and going over the passes with long step downgrades, I wouldn't want to tow even 2000 pounds without one.


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post #56 of 60 (permalink) Old 04-09-2017, 08:02 PM
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Normally I would say that's true, but after this trip to Moab and going over the passes with long step downgrades, I wouldn't want to tow even 2000 pounds without one.


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Towed my 3500lb travel trailer through there. Wasn't until a few months ago I realized the brakes on my travel trailer are bad. Which may have contributed to the early failure of my factory rotors. I'm not against adding a brake controller for something lighter. Just understand it'll have to be hardwired in.


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post #57 of 60 (permalink) Old 04-09-2017, 08:14 PM
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Quote:
Originally Posted by Len1304 View Post
Towed my 3500lb travel trailer through there. Wasn't until a few months ago I realized the brakes on my travel trailer are bad. Which may have contributed to the early failure of my factory rotors. I'm not against adding a brake controller for something lighter. Just understand it'll have to be hardwired in.


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Maybe it's just the trucker in me but I would rather have it and not need it than need it and not have it.

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post #58 of 60 (permalink) Old 04-10-2017, 06:52 AM
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Having trailer brakes on even a loaded 1000lb trailer if available is a good thing.
Safety is improved. Also the wear on your vehicles brakes are reduced.
Its a win win with trailer brakes. The only downside is increased maintenance on the trailer.

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post #59 of 60 (permalink) Old 04-10-2017, 07:36 AM
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Originally Posted by Jeepster1 View Post
Having trailer brakes on even a loaded 1000lb trailer if available is a good thing.
Safety is improved. Also the wear on your vehicles brakes are reduced.
Its a win win with trailer brakes. The only downside is increased maintenance on the trailer.


The problem is, trailers that lite often don't have brakes. So unless the trailer is custom it's not needed.


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post #60 of 60 (permalink) Old 04-10-2017, 07:38 AM
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Originally Posted by Wheyman View Post
Maybe it's just the trucker in me but I would rather have it and not need it than need it and not have it.

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I was a trucker too. That's why I can handle my rig without brakes. I don't drive like an idiot when I'm towing. But I also have slotted and cross drilled brakes now and believe me, they get a work out. The brakes on my trailer are just out of adjustment and since I live in an apartment i don't have a space to pull the drums off and adjust them.


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