Trailer running lights hook-in?
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Trailering
Joined: May 2012
Posts: 17
Likes: 4
From: Horizon City, TX
Trailer running lights hook-in?
I have a '02 Exp that came with the heavy duty tow pkg. (7 pin connector). I am hooking up the brake controller to the factory supplied plug. The controller has 4 wires which go to the harness plug but the harness plug has a 5th wire for illuminated lights (running lights).
Where is the best place for this wire to be tied into? Should I just find a source for lights somewhere in the dash and splice it in? Or is there a definitive location for this wire?
The instructions that came with the harness say nothing about it.
Thanks in Advance.
Steve
Where is the best place for this wire to be tied into? Should I just find a source for lights somewhere in the dash and splice it in? Or is there a definitive location for this wire?
The instructions that came with the harness say nothing about it.
Thanks in Advance.
Steve
Posting Guru
Joined: Feb 2008
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When you say brake contoller, are you talking about an electric brake controller under the dash or are you just talking about the trailer plug? I suspect the latter. Any trailer plug has running lights on it, the brown wire in is the running lights. The green is the right stop/turn, yellow is left stop/turn and white is ground. The 5th wire (blue) in a 5 pin is the brake signal for trailers with electric brakes, or aux power if no electric brakes. The 7 pin has brake, aux and back up capabilities.
Thread Starter
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Trailering
Joined: May 2012
Posts: 17
Likes: 4
From: Horizon City, TX
Im actually talking about the brake controller. The factory supplied a plug for it and the controller has 4 wires (power, ground, brake, stop light) and the plug for the underdash harness has 5 wires ( the same 4 as the controller plus 1 labeled illuminated lights). I'm trying to figure out if that wire needs to go somewhere specific or just splice it into somewhere in the lighting harness.
Thread Starter
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Trailering
Joined: May 2012
Posts: 17
Likes: 4
From: Horizon City, TX
ok - that makes sense. I have never seen that before (had the same controller on a chevy proir and it only had 4 wires).
I guess I will find out when I plug the trailer in - lol!
Thanks
I guess I will find out when I plug the trailer in - lol!
Thanks
Posting Guru
Joined: Aug 2007
Posts: 1,079
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From: Fort Wayne, IN
That pin is if you have a fancy illuminated digital brake controller, if i remember right the illuminated pin feeds from your interior light dimmer, the same one that controls brightness of all your lights on the dash/radio. If you just have a simple dialer unit or something like that, they are generally 4 pins because they either don't have displays or their displays don't have controllable brightness.
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