DO NOT GROUND THE BROWN WIRE.
It runs your running lights. Ground it and you will blow the fuse - and the lights will stay dark.
Ground the white wire. Just put a ring connector on it and put it under a sheetmetal screw on the body of the tow vehicle.
Yellow and Green are combination brake and turn signal circuits. I think green is left and yellow is right, but I'm not sure.
Blue runs trailer brakes.
Red charges the trailer battery.
This all assumes that you are using the sort of industry standard colors. I've seen all kinds of screwed up trailer wiring - including all one color. Good luck.
You have a grounding problem at the trailer. The white wire is the ground on trailer wiring. The taillights are brown, the signals and stops are yellow and green. Sometimes the white wire will loose its continuity with the truck, causing the lights to black out. It could also be a wiring issue with the trailer itself, but most likely its the ground giving you feedback and causing the blackout. run a wire from the ground contact on your plug back to a spot on the tongue and secure the end of the wire to the trailer at that point. Do not rely on the contact of the trailer with the ball hitch to establish a ground.
Make certain that the wiring is connected properly but also, check the ground wire. Don't count on the hitch to be the ground for the trailer. There should be a ground wire that goes to the electrical plug, make certain that it is connected properly.
In electrical wiring, the live or "hot" wire is typically brown or red, the neutral wire is typically blue or black, and the ground wire is yellow or green. So, in this case, the brown wire is likely the hot wire, the blue wire is the neutral wire, and the yellow green wire is the ground wire.
positive wire is the live wire it goes to the + term ground goes to - term
The ground in an electric circuit is the brown copper wire.
Connect one brown wire to the live wire (black) from the ceiling, the other brown wire to the neutral wire (white) from the ceiling, and the ground wire to the ground wire (green or bare copper) from the ceiling. Make sure to turn off the power at the breaker before starting the installation.
The ground wire going from the cab of the truck to frame and/or the ground wire going from the back of the motor to cab ground. The reason is that the ground wires lay across the exhaust manifold and get burnt off after a years of use.
WHAT ARE THE WIRE COLORS FOR BRAKE AND TURN SIGNALS ON 1999 PONTIAC IN ORDER TO HOOK UP TRAIER HITCH PLUG?Not positive yeLL0w wire Left turn signal, riGht Green wire once you have the turn signal wiring hooked up the brake lights will automatically work because the brake lights work through the turn signal wiring, brown running lights, white ground.
The ground wire on a typical Chevrolet truck should be located at the rear of the vehicle. The wire should be white in color, and should be attached to the frame by a screw. You may need to remove the tail light housing and trace the wire from there as the location varies on different models and years.
Assuming you'll be using the common four pin flat connector; Green is Right Turn signal/brake light Yellow is Left Turn signal/brake light Brown is for Tail lights/Running lights White is Ground You may need a 12volt test light to identify the wires on the truck to identify which ones to splice into. Connect to a good ground and pierce the insulation with the pointed tip to identify.
A four-wire harness kit has 1 white wire that connects to ground; 1 brown wire that illuminates the side markers and the tail lights; 1 green and 1 yellow wire, they are for the right and left signal lights and brake lights (I don't remember which color goes to which side, but you can experiment before you splice).
humming noise is a bad ground to the radio. you may have a loose connection. connect a ground wire to frame of truck.