Can red and black wire connect together answers in most cases no. 1 the black wire its ground negative 2 red wire is positive connect it to a wire that has voltage every time you turn the ignition on that way when you turn the ignition off the stereo will shut off also.
Rv Dimmer Wiring Options
Can you connect red and black wires together. Connect the red wire coming from the outlet to the bottom switch terminal and now the lower receptacle on the split tab outlet will get power only when the switch is on. If you have two switches to control the fan then black and red are the two wires from the two switches. One is for the fan and the other is for the light. Red is usually the hot wire and black the ground but follow them to be sure as it may have been rewired and insulation not. In addition red wires are used to connect hardwired smoke detectors to the homes power system. Red electrical wire indicates the secondary live wires in a 220 volt circuit used in some types of switch legs and in the interconnection between smoke detectors that are hard wired into the power system.
You can connect a red wire to another red wire or to a black wire. Depending on how they are connected at the switches depends on which one you connect the fan or the light at the ceiling. Connect the black jumper wire to the top terminal screw on the switch and now both the switch and the top receptacle in the split tab outlet have power. Its possible to link two red wires together or a red wire to a black wire. Like black wires they can also be used in some types of switch legs. In 220 volt circuits red wires are the secondary live wires.
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