Bulbs are good, ohmed wire from fuse box to taillight and didn't want to go much further. That is until I have some direction to go. The flasher is very fast and the front is flashing. Fuses are all good. This is a crew cab if it makes a difference.
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Since I assume You already checked your bulbs, Sounds like You have a bad connection in the wiring from the fuse block anywhere back to the rear of the car, or a bad fuse/bad connection at the fuse block.
Judging by the rats nest of wires underneath your seat,...this may take some time to figure out. You have a direct short to ground on the power wire for the turn signals. Few questions......are you using led bulbs in the turn signals? Have you added a integrated taillight? Are you running anything else off of that circuit?..(neon lights,etc.) Have you checked the bulbs to make sure they are in correctly,and that the socket wires arent touching the inside of the socket?
Harley Davidson Wiring Diagrams and Schematics
Hi Anonymous, 1998 and later Sportster models circuit breaker and fuses were located in an electrical bracket behind the starter relay and data link that was mounted behind the left side panel. 1997 and earlier circuit breakers only no fuses were located under the seat and always check fuses and bulbs first, you could have a faulty turn signal module or a bad turn signal button/switch, remove it from the switch housing and check for continuity, check your wiring and connections from the turn signal switch to the turn signal module with a testlite. Make sure all wires are not worn or pinched and connector pins are not corroded, broken, or loose. For a free wiring diagram please visit the website below. Good luck and have nice day.
The circuit is this:From your fuse box runs a Light Blue wire to your left handlebar switch.That wire is "live" and transfers power to the turning signal switch.That switch depends on what direction you push it, transfers the power to:1) Light Green wire that powers the right hand turning signal bulbs (front and back)2) Black wire that powers the left hand turning signal bulbs (front and back)Each bulb uses a Black/White wire to ground and close the circuit.
You probably do not have a good ground. Pull the bulbs and check for voltage at the contacts in the sockets. If you have voltage, check the ground using an ohm meter. If you don't have voltage, you've damaged a wire somewhere and have probably blown a fuse. Look behind the trianglur plate on the left side of the bike for the fuse box.
Your bike is not equipped with the old style "flasher unit". It has a "black box" unit that is called a turn signal canceler. It starts the turn signal flashing and then cancels it after a certain period of time. In your question you said that the right signal doesn't work, then you said that the right signal does work. Make sure which ever side does not work that both the front and rear bulbs are good. If one of the bulbs is bad, it won't flash. Make sure both the front and rear turn signal light up. If you can't get it, contact me directly at firstname.lastname@example.org and I'll send you a trouble shooting guide. That might help you solve the problem. Make sure you remind me of what you need.
There is a fuse for the lights. It's in a fuse box located either under the seat or behind the triangular plate on the left side of your bike. If it's not blown, take the lens off and check the bulbs for broken filaments. The running light wire is the blue wire in the turn signal units. You may have to trace this out to find the problem.
Initially, this is a loose ground issue. Check the ground wire black/white; it should read 0 ohms to ground. Additionally or alternately, hardwire another ground wire to the body/frame from the taillight socket body.
The only moving wiring loom on the bike is the exit from the tank area to the headlamp cluster and , has to be high on the suspect list. The handle bar to main frame should be inspected also ! Good luck