I need a color to color diagram for a 92 chevy 1500 for wiring in a trailer.

Go to this link for wiring diagrams. http://bbbind.com/free_tsb.html

GM trucks are prewired foe 4 wire trailer harness go to Autozone or other parts house and you can buy a direct plug in harness. GM just tapes the connector around the rear area near bumper on the harness.

Is it wired for a trailer light harness? If "yes", is the wiring OEM or aftermarket? You may have a short in the truck's trailer wiring harness, or you may have a problem with the multi-function turn signal lever/wiring, the flasher(s) located under the dash may be defective, or you may simply have burned-out turn signal bulbs (if a front or rear bulb on either side is blown, the signal on that side may not operate). Start the truck, operate the turn signal lever and visually check to see if it's blinking

You will need a ground wire first.
If you have a car built in the USA since about 1985, you have separate ground wires all over the car to each electrical component. You will need to find one and add a wire for the trailer so the trailer electric will be grounded to the car.
The ground wires on 4 prong flat plugs are white in color.
If your car is older than that, you can drill a hole in the metal frame and attach the ground wire to the frame at the rear of the car.
Next do the taillights.
Find the hot wire to the taillight on either side or to the license plate light and add a wire to that one to go to the trailer.
This wire is usually brown if you are using a flat 4 wire plug set up.
The next wire is the left turn signal, that wire is usually yellow in color, Finally, the right turn signal wire is green.
Understand you can have a real conflict if the trailer light do not match the car lights.
In that case, you may need to buy an adapter to make them work. What I mean is, if you have a separate bulb on the car for the turn signal and for the brake light, that will not match most trailers, and you will need to buy an electronic adapter.
God bless your efforts.

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.

sammy tatz,

There usually is not a diagram for this type of wiring, as it's wired directly into the current wires. You simply need to follow the wires on the truck (if doing the plug here) and run the wiring to these as needed per light.

If you are wiring the trailor - the new wiring harness should be color coded as well as labeled (if new) for each light. Trace the wires (if attached still) and attach each wire as necessary to it's appropriate light.

I have never personally heard of wiring diagrams for this, at least not for aftermarket wiring. Any other diagrams for wiring can be found in a service manual for your truck.

Please let me know if you need further assistance with this matter.

carsandcomps,

Guru, Premium Expert @Fixya.com

off the top of my head international standard
RED STOP
GREEN RIGHT HAND FLASHER
YELLOW LEFT FLASHER
BROWN SIDE /TAIL LIGHTS
WHITE EARTH
BLUE AUXILIARY

BROWN PARK /TAIL LIGHTS

Review this post, Wiring harnesses & adaptors

Good luck (remember rated this help).

Try this Link www.dodgeram.org/tech/mods/electric/trailer_wire.htm

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