Installing Blazer Flushmounts: Difference between revisions

Now, connect the wires to the bulb socket. These are sold as truck marker lights, and they only come with one wire (for the 12 volt 'hot' lead). On a truck they would pick up the ground from the metal on the truck cab. Since the fairing is plastic and doesn't conduct electricity, you need to run one of the bulb wires to a bolt that attaches the socket to the fairing. This wire will ground the socket back through the ground wire for the signal. And incandescent bulbs don't care about polarity, which means it doesn't matter which wire you use for 12v and which is ground.