Question about 2007 Chevrolet Silverado 1500 2WD

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How do you install wire harness for trailer hitch on a 2007 silverado classic pu? Do I have to drop the spare tire inorder to access the tube that goes to the bumper , and how do I feed the wires through the tube that leads to the bumper light receptical. and where is the plug in for the wires on the drivers side?

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These are all snap together now. you buy the harness as a unit. it should tell you where to unplug your existing lights. this is usually on the driverside rear close to the bumper. you just unplug your existing light , plug in the new adapter then plug in the new trailor wires to the adapter. you get these at any parts house like autozone, even wal mart sells them. it is so simple it takes about 10 minutes.

Posted on Oct 08, 2010

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2007 Chevy silverado (classic). Once hooked up to trailer, the brake lights do not work only turn signals on trailer.


firat of all check and make sure you have a real good ground or otherwise you will lose current to another wire and this can short out and cause the lights to malfunction.

White: Ground
Brown: Running
Yellow: LT and Stop
Green: RT and Stop

This is the wiring code for the 4 wire trailers and
Wire a round seven-pin hitch, typically sold without a wiring harness, to the vehicle observing the following color codes: Run a white 10-gauge wire between ground and terminal one, run the blue 12-gauge wire between the electric brake controller and terminal two, the brown 14-gauge wire between the taillights and terminal three, the black 10-gauge wire between the permanently live 12-volt supply and terminal four, the yellow 14-gauge wire between the left turn/brake light and terminal five, the green 14-gauge wire between the right turn/brake light and terminal six and the purple 14-gauge wire between the backup light and terminal seven (in the center).

Feb 18, 2011 | 2007 Chevrolet Silverado Classic SS New...

1 Answer

2002 silverado 1500 wiring diagram where can i get a copy? i need to wire it for a trailer.


Look in your glove box and see if you have the PRO code U89: wiring harness, car trailer
It's common to have the trailer harness already installed in your Silverado without you know and the dealer can pull it out for you from where it's tucked up in the frame passenger side by the spare tire for the simple cost or $65.00.
http://www.etrailer.com/tv-wiring-install-2006-chevy-silverado.aspx
Thank you for using fixya and good luck.

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1 Answer

Were do you hook up the two wires under the hood for trailer brakes on a 2000 silverado


Sometime around 2000, GM started putting trailering pre-wire harnesses in the vehicle. Your truck may have this harness built in and would greatly simplify brake controller installation. Look under the glovebox and see if there is a wire harness tied off. There will be four wires in this harness, which should be run over to the steering column to use it. Most trailer brake controllers are compatible with this harness.
The four wires in the harness are: Red, 12vdc; black, ground; blue or purple, brake pedal; and brown or white, trailer brake wire to seven pin, four pin, or five pin connector at trailer hitch, if your truck came from the factory with a trailer hitch.
If you are adding the hitch and do not have the four wire harness, the under hood wires from your brake controller are Red, connect to one of the studs under the distribution box cover (the distribution box is on the driver's side against the firewall. Underneath the cover are two large threaded studs which are hot from the battery all the time); and the other wire from your brake controller would have to be run the length of the truck along the frame, tied off in several places, to the trailer hitch connector on the bumper. Follow the directions that came with trailer hitch wiring connector to connect this wire to the proper pin in the connector.
If this has helped you, great, and please remember to vote/comment.
Good luck!

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1 Answer

TRAILER BRAKE WIRING ON 2007 3500 CHEV IT HASE TRAILER BRAKE IN DASH BUT NO POWER CUMMING OUT OF BLUE WIRE ON PLUG.


Check the plug under the truck. It is probably over the spare tire. If you still don't have power at that point, check all fuses. go to http://www.etrailer.com/faq-wiring.aspx for more detailed info.

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1 Answer

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I had a similar problem with an 88 F250. Measure the tire height with tire standing, then measure space between hitch and measure frame from same place.
If the space between the frame would allow the tire to fit without the hitch, you need a wider hitch. If your current hitch has room for the tire you are all set.
Usually a heavier class hitch will have wider mounting points, but be aware that access to put in bolts may require you to weld the hitch to the truck.

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if you go to a hitch shop they usually have a plug that fit to stock harness for a price but its easier and safer

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If the spare tire is under the back of the vehicle, look on top of it.

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