Turn signals come on but don't flash on my 2001 sportster

Question edited to add maker and for clarity, but
but if I **fit** my turn signal No idea what that means.

Check all the earthing points.

https://www.google.com/search?q=2001+Harley+Davidson+Sportster+1200C+headlight+won%27t+turn+on+but+if+I+fit+my+turn+signal+all+lights+flash

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if your hazzards flash, that means your bulbs will be good but, your turn signal fuse is blown. you should check that first, & don't forget to turn off your hazzards before you can see if your turn signals work again. give it a try.

Your bike does not have a "relay" or the old style "flasher unit". It does have a "turn signal microprocessor". I have a troubleshooting guide for an earlier model. There may be some differences in the wiring color codes but the principle should still be the same. Contact me at [email protected] and I'll send you a copy. Don't forget to remind me of what you want.

Steve

The 2 filament on the LH Front turn signal is most likely burned out, ...........or the ground to it, & the entire socket needs replaced. Caution lights, send signals to ALL FRONT & REAR lights. All turn signal lights must be in working order, as it is a "pulsating" currect surge sent to the bulbs, LH or RH, depending which direction you wisk to turn. If 1 filament is broken, the circuit is incomplete, & no flash will occur. Usually you will get one light that stays on, & the front or rear missing lighting, is the one whichis the culpret.

Contact me directly at [email protected] and I'll send you some information on how to trouble shoot your Turn Signal Microprocessor. It's four JPG picture files. This forum will not allow for a file size of over 150kb. Don't forget to tell me what you need.

Steve

I don't work on the "newer" bikes. I only work on the old stuff that the dealerships will no longer work on. But, on some of the older Sporty's, you had to take the turn signal lens off and remove the bulb. The bolt was hidden inside the turn signal.

Steve

Your bike is not equipped with the old style "flasher" like they used to be back in the '80's. You bike has what Harley calls a Turn Signal Microprocessor. It's a "black box" about a half inch thick by an inch and half wide by three inches long. It has a large plug with about a dozen wires on one end and a mounting bolt in the center of it. Exactly where it is, I have no idea as Harley moved these things around as much as they did the oil drain on the Sportsters. Underneath the battery is a bad place for anything, especially electrical components. The faint clicking sound you're hearing may be a circuit breaker. By the signals flashing very rapidly, this would indicate a high current flow that may be caused by a short circuit.

Good Luck
Steve

Before you take anything off or hook anything up, take the bulbs out of both turn signals. Look at the base of the bulbs and see if there are two or only one connections. I'm thinking you bike has rear running lights and the turn signal unit you are trying to replace it with only has the turn signal capability. Before you connect any wires, make sure the black and the blue wire on the bike are not touching anything metal. Turn the turn signal on and see which wire is hot. It probably won't flash but it'll go "hot" when you press the turn signal button. If they both only have one filament in the bulb, one connector on the base, then wire the blue wire on the bike to the black wire coming out of the turn signal. This would be my guess as the ground for the turn signal is a physical ground. If it doesn't work, try to connect the black wire to the turn signal body to make sure it's got a good ground. Now, there is the possibility that the turn signal will not work at all. Your bike is equipped with the automatic turn signal cancelling unit and they are very picky. It may sense the mismatch in the parts and not work at all.

Good Luck
Steve

just change your hazard/turn signal relay, yesterday i replace the relay on my JGC2001 and it woks good...

harleys use three wires for signal 1 power 1 flash and 1 ground. should be 1 black,1 blue and 1 purple.