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Unread Yesterday, 12:14 AM   #1
kk52736
Registered User
2007 WK 
 
Join Date: Aug 2010
Location: Calgary
Posts: 43
I just installed an electric brake controller on my 2007 Grand Cherokee Overland WK with tow package BUT without factory brake controller plug.

I just bought a very good price used Tekonsha P2 brake controller to be occasionally use for towing my 26' travel trailer.
I am putting the controller in the hole beside the left steering wheel. Put away in glove box when not in use.

Items needed
-pigtail wire harness originally comes with the brake controller
-5 feet insulated 14 guage 2 wires inside
-auto reset automotive 30amp circuits breaker
-some clips and end to connect wires
-pliers, cutter, screw driver...etc

forumrunner_20150826_235048.jpg
Cut a hole to fit the harness end


forumrunner_20150826_235055.jpg
Different view


Attachment 2350226
Open the kick panel, swing all the way down to take it off, unscrew the 2 screws on the corner of the black panel under the kick panel right above the brake and gas pedals


forumrunner_20150826_235108.jpg
Find the green wire which is for the trailer brake, it is hidden on the left very high bundle up with a huge wire harness, you can just put your hand right behind the fuse panel near the firewall and there is a wire loop around there, just pull the loop to find the end. Connect that to the blue wire on the controller harness for trailer brake.


forumrunner_20150826_235116.jpg
Connect the red wire from the controller harness to the jeep's brake light signal, the plug is right above the brake pedal, not the one in the front, there is another flat plug with 6 wires higher on the right more to the back or behind the pedal arm, the 2nd wire on the right (white with tan)


forumrunner_20150826_235126.jpg
Feed the 12v power and ground through firewall, there is an extra firewall entrance with a rubber cap right behind the engine on the right side; when look from the inside, it is right above the gas pedal.
White to the white on the controller harness for ground.
Black to the black on the controller harness for 12v power.


forumrunner_20150826_235132.jpg
Attach the white wire to the battery negative. And remove the whole negative terminal to work on the battery now.
Cut the black somewhere between the firewall and battery to put the circuits breaker then attach to the positive battery.
Double check all wires, and reconnect the negative battery.



forumrunner_20150826_235139.jpg
Reverse all the steps to install panels back, and feed the plug through the hole on the left pocket.

forumrunner_20150826_235146.jpg
Plug in the brake controller, hola! Nice install, working great.


forumrunner_20150826_235152.jpg
Better view

forumrunner_20150826_235158.jpg

forumrunner_20150826_235102.jpg  
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Unread Yesterday, 01:20 PM   #2
terrasmak
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2007 WK 
 
Join Date: Jan 2012
Location: Sin City, NV
Posts: 538
Nice write up, I have mine sitting here ready for install
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Unread Yesterday, 06:12 PM   #3
kk52736
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2007 WK 
 
Join Date: Aug 2010
Location: Calgary
Posts: 43
Let me know if you need help, the green wire is little stubborn hidden bundled with other harness, took me 2 hrs to find that, but only took 1 hr to install everything after
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Unread Yesterday, 06:38 PM   #4
TangoTango
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2008 WK 
 
Join Date: Oct 2011
Posts: 1,650
Nice write up.

One question ... that white wire can just ground to any body part instead of the battery can't it?
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Unread Yesterday, 06:55 PM   #5
kk52736
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2007 WK 
 
Join Date: Aug 2010
Location: Calgary
Posts: 43
According to the instruction manual from the brake controller, 12v power must connect directly to the battery positive, and the ground directly to the battery negative, and I WON'T be lazy and risk your life that the trailer has no brake if any connection error, that's why the instruction also said only use a "Auto Reset circuits breaker" and NOT fuse.
And because you already wire the black to the battery anyway, not much more work to tap the white ground wire to the battery negative
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Unread Yesterday, 07:27 PM   #6
TangoTango
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Join Date: Oct 2011
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I have to do mine which is why I was asking.....

What auto reset automotive 30amp circuits breaker did you go with? You have a part # ?
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Unread Yesterday, 08:00 PM   #7
kk52736
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2007 WK 
 
Join Date: Aug 2010
Location: Calgary
Posts: 43
There is no part number for the breaker, its just a generic automotive circuit breaker 30amp I used

images-2-.jpg
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