What kind of wiring does a GMC trailer use?
White wires for any power that happens on the lighting. Brown wires for almost any running lights, back lights, and peripheral markers. Yellow wires for almost any left brake signal and left sign twist. Green wires for any ideal brake signal and right signal turn.
Where is the constant wire on a GMC stereo?
Locate the +12 volt constant wire first. Label it or splice to constant wire on aftermarket stereo first. Swapping yellow wires will cause damage to any aftermarket stereo. Check fuses if your unable to find +12 volts. Note the location of the connector “Keys” in yellow. All wire diagrams are not 100% accurate.
Do you need blue wire on your trailer?
You will want to find out if the blue wire on your trailer is needed for 12 volt power for trailer accessories, for electric brakes, or for a reverse brake lockout, if your trailer has surge/hydraulic brakes.
Where to attach blue wire from 5 wires when installing a 7 way connector?
If you need it for 12 volt power you will attach it to the # 4 terminal at the 1 oclock position. If you need the blue wire for reverse brake lockout you will attach it to the center pin of the 7-Way connector.
White wires for any power that happens on the lighting. Brown wires for almost any running lights, back lights, and peripheral markers. Yellow wires for almost any left brake signal and left sign twist. Green wires for any ideal brake signal and right signal turn.
Locate the +12 volt constant wire first. Label it or splice to constant wire on aftermarket stereo first. Swapping yellow wires will cause damage to any aftermarket stereo. Check fuses if your unable to find +12 volts. Note the location of the connector “Keys” in yellow. All wire diagrams are not 100% accurate.
You will want to find out if the blue wire on your trailer is needed for 12 volt power for trailer accessories, for electric brakes, or for a reverse brake lockout, if your trailer has surge/hydraulic brakes.
What’s the name of the Blue turn on wire?
The blue/white stripe remote turn on wire has a number of other names such as accessory wire, system remote control wire, etc… Some of the confusion about this wire may come from the different wiring methods between a factory and an aftermarket head unit.