Question about Harley Davidson Motorcycles
When i turn on thew turn light the light on the bike ond trailer will not light up
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Posted on Jan 02, 2017
Wiring a motorcycle for a trailer is exactly like wiring a car or truck for a trailer hitch. You have to determine what type of lights you want on your trailer. You brake lights, turn signals, and tail lights. So, you get yourself a test light and connect the alligator clip to a good ground.
Now, on the backside of your rear fender is all the wires going to your brake light / tail light assembly and your turn signal lights. Now, I don't have a schematic for a late model FLH but it used to be the red wire was the brake light, the green wire was the tail light and you had a brown wire for one turn signal and a purple wire for the other side. The turn signal wires were actually gray wires with little brown or purple "bands" around the wire out near the bulb.
Step on the brake and use your tester to probe the wires until on lights up. Release the brake to verify the correct wire for the brake lights. Now turn on the right turn signal and probe the wires until you find one blinking. That's the right turn signal wire. Do the same thing to find the left turn signal wire. Now, you shouldn't have very many wires left. So, turn on the headlight and probe until you find a wire that lights up the tester. Now, at this point you should know which wire is which on your bike.
The trailer should have come with a wiring diagram. If not, you'll have to look at the light sockets on the trailer. You should see at least four colored wires. There should be one color wire on one light that is not on the other side light. These are turn signal wires. One color to the right, one color to the left side. Now the other two colors should go to both lights. One color is the brake light wire and the other is the tail light wire.
Now, that you have all the wires identified, simply buy the little connectors and start connecting the proper wires to each other. You'll be trailiering in no time. Good Luck and ride safe
Posted on Jan 29, 2010
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