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Old 08-05-2013, 03:52 AM   #1
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Question on trailer wiring

Ok guys, couldn't find what I was looking for in search. Is there a plug&play option for wiring a 7 way plug for my TJ? It didn't come with a factory hitch or wiring for trailer lights. If not, whats the best way to splice a wire and keep it water-tight? Thanks

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Old 08-05-2013, 10:38 AM   #2
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Ok guys, couldn't find what I was looking for in search. Is there a plug&play option for wiring a 7 way plug for my TJ? It didn't come with a factory hitch or wiring for trailer lights. If not, whats the best way to splice a wire and keep it water-tight? Thanks
They don't make a plug & play 7 way for a TJ. Typically a 7 way has a wire for electric brakes and charging (hot) line, both of which are typically used for trailers of too heavy a weight to be towed by Wranglers. They normally also have a wire for back up lights. What do you need more than four wires for? That's what would determine where you have to wire from.

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Old 08-05-2013, 11:46 AM   #3
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I wired a 7-way plug to my Jeep. Fabricated a mount to attach the plug to the bumper w/ integrated hitch. Trailer brakes are hooked up via a Draw-Tite Activator II. You can also wire up a trailer battery charging feature and trailer reverse lights.

Got all the parts on Trailer hitch, hitches and bike rack (800)298-8924
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Old 08-05-2013, 03:45 PM   #4
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My father's trailers have the 7 plug and id like to be able to use his trailer without an adapter, also I would like my trailer to have backup lights if I ever desire. Found a Hopkins set up that has both the flat 4 and round 7 plug. Gets its input from a flat 4 plug plus the rest of the 7 plug also have there own leads. So I should be able to just plug in a regular tj splice harness right? Planning on recessing it almost flush in my bumper.
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Old 08-05-2013, 03:47 PM   #5
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I agree with Dennis. If you really want one then custom like LJ04 said, use heat shrink tubing and splice it in. If you really want the best connection then spice the wires inside the tub over the wheel well.
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Old 08-05-2013, 03:59 PM   #6
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My father's trailers have the 7 plug and id like to be able to use his trailer without an adapter, also I would like my trailer to have backup lights if I ever desire. Found a Hopkins set up that has both the flat 4 and round 7 plug. Gets its input from a flat 4 plug plus the rest of the 7 plug also have there own leads. So I should be able to just plug in a regular tj splice harness right? Planning on recessing it almost flush in my bumper.
I think the easiest way to accomplish what you want to do, is to buy a four flat plug & play harness for your wrangler so that's just a matter of disconnecting a couple of connectors and plugging the harness connectors inbetween (and probably securing a ground). Then run one wire from your back up light circuit. Cut the flat four plug off the end of the harness, and wire all 5 wires to the 7 way connector.
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Old 08-05-2013, 04:23 PM   #7
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I think the easiest way to accomplish what you want to do, is to buy a four flat plug & play harness for your wrangler so that's just a matter of disconnecting a couple of connectors and plugging the harness connectors inbetween (and probably securing a ground). Then run one wire from your back up light circuit. Cut the flat four plug off the end of the harness, and wire all 5 wires to the 7 way connector.
This is the way I'm going to go I think. I won't need the hot wire or trailer brakes but will always have the option to. Already have back up lights wired into my bumper so I can just run another relay and power back for that. Ordered everything, curt class III, flat 4 harness, 7 way female plug and a two prong weather proof plug for my backup lights already mounted in the bumper. All for $150. I think that's pretty good.

Heres the plug I'm going to flush mount in bumper. Notice it still has the flat 4 hook up if I need ever need that.


Click image for larger version

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Hope it fits in my bumper, now that I think about it, it may not....
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Old 08-05-2013, 04:27 PM   #8
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That should work...
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Old 08-05-2013, 04:58 PM   #9
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Thanks for all the suggestions guys. Also add the flat 4 harness into the above price. All ordered off amazon with free shipping to boot.

So anyone have any ideas how to get off old herculiner? I didnt prep good enough so its not on there good to begin with.

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2006 TJ 4.0 6speed 30/44

Same old, Rat in a drain ditch, Caught on a limb
You know better, But i know him
Like I told you, What I said
Steal Your Face right off your head.
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