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tow package wiring harness

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Old 02-01-2008, 05:21 AM   #1
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tow package wiring harness

I just put a tow hitch and wire harness from the dealer on my '07 Tacoma. They both came with directions from the dealer however the directions for the harness were a little less than adequate since the harness is a mass of wires with nothing labeled. I was expecting some little union or something but instead what I got looked like I was going to have to rewire the entire truck. No Fear though, I'll give you the info I was missing so you don't have to spend an hour or so visualizing how this octopus is going to fit.
1. start off by knowing that the little black box in the middle of the main set of wires is going to mount inside your left rear tail light box on the nice flat wall beside the bed.
2. there are 2 set's of wires with double end's. one has a long set of wire and the other is a short set of wires. The short set is the left tail light and the long set is the right tail light.
3. the seperate long wire with a plug on one end and a round connector w/fuse on the other is run from the battery to the left rear bottom of the truck. Basically just follow the brake lines and keep it secure with the wire ties.
4. now just follow the directions the dealer gives you and you'll be fine.
hope this helps someone...............
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Old 02-01-2008, 06:54 AM   #2
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I just finished building my own receiver hitch and now I need the
wiring harness, may I ask how much they cost from the dealer?
I have seen some aftermarket ones available also.

Thanks for your post, it will be useful regardless of the one I get.
And welcome to TW
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Old 02-02-2008, 04:47 PM   #3
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Bill,
the hitch was $161.67 and the harness was $96.44. I went with OEM because I didn't want any splices or drilling.

JSB
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Old 02-02-2008, 06:33 PM   #4
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jsb, did you have any trouble finding the connector point in the passenger compartment? There was a post last November where someone was having difficulty finding the connection. The post is listed below in "Similar Threads", titled "Wiring harness".
I want to install my wiring harness in the spring; however, I am concerned about being able to find the connection point "4P". Look forward to your response.
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Old 02-02-2008, 10:04 PM   #5
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Luckily I bought my truck with a factory hitch and wiring harness, but now I am getting this greenish corrosion slime on the contacts, is there something I can spray or apply to prevent this ?
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Old 02-03-2008, 02:23 PM   #6
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terrier:
the line that runs from the left light to the right light has a male end and a female end, just like what's there already. You just simply unplug the taillight and plug in the harness male to the light's female then plug the harness' female to the original male plug. It's really a no brainer once you get to that point.

Jedi:
clean up the connection with a wire brush then spray it down with some silicone spray.
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Old 02-03-2008, 05:52 PM   #7
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Thanks jsb. Just so we are on the same page, is the connection to which you refer behind the kick panel or under the steering wheel area in the cab? Or, are you talking about under the bed near the tailights? I'm talking about the connection inside the cab.
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Old 02-04-2008, 03:14 PM   #8
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Thanks jsb, will do.
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