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Where does this wire go?
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Thread: Turn signal won't turn off automatically Reply to Thread
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  Topic Review (Newest First)
09-11-2011 08:28 AM
BeeSea Thanks you all have been very helpful! I will try to clean that up and see what happens!
09-08-2011 10:27 AM
ZCraggRatt As far as I can tell from schematics, RakerBill has it about right. The turn signal relay has no direct influence on the cancellation circuit. The turn signal cancelling controller receives 4 pulses per speedo cable revolution. The pulses are converted to distance via algorithm. The controller will measure the distance 4 seconds after you turn the signal on. After the count begins, and the algorithm returns a measurement of 50 meters, the controller sends a pulse to the cancellation solenoid to return the switch back to center. There is a section on the cancellation circuit in the service manual on page 15-38. A great resource for electrical troubleshooting the VN750.

P.S. To get good service from the cancellation circuit, I would recommend cleaning and lubricating the contacts of the turn signal regularly or when trouble shows up. The pressure required to return the switch back to center is key, and should be consistantly smooth for proper operation of the solenoid return function.

Good hunting.

09-08-2011 09:17 AM
BeeSea OK I found the container it was an EP34 Tridon electronic flasher the original part is NIPPONDENSO FJ245ED
09-08-2011 09:04 AM
BeeSea I replaced the 3 prong blinker relay that fits right up against the battery box. It was a generic part (suppose to be good for LED's if I ever go that route you need this relay I guess) anyway, it made my turn signals work again. Still looking for the exact name of it- I kept the box it came in with the old part cause I figure I need the exact part, now I have misplaced it. I had been caught in a rain storm and the original part had a hole burnt in it. Looked terrible. So good possibility something else is wrong electronically.
09-07-2011 06:29 PM
RakerBill There is a part in the speedo bucket that runs off of the speedo cable that sends a pulse to the self cancelling unit to turn off the turn signals.
Not sure of the technical term, but when the speedo cable is turning, it pulses I think 3 times per revolution of the cable.
Brain isn't working right today, and I don't have the manual handy to get an exact part or reference on how it works.
09-06-2011 11:08 AM
Roach Does anyone know what activates the solenoid that cancels the signal?
09-06-2011 10:45 AM
pappa The cancelling unit works independent of the relay. You could remove the bulbs and/or the relay and it still should work. You must have touched something that made it stop working.
09-05-2011 11:25 PM
OlHossCanada Yup, self cancelling only from 85-88.
Here is a short history of changes to the vn750 over its 21 years of manufacture:

Quote from above link;
Wiring harness
- '85-'88 have a Turn Signal Control unit
- '89- up Turn Signal Control unit eliminated.

- '85-'88 are NOT interchangeable with 1989 and up
Won't work by leaving the signal circuit open
09-05-2011 10:56 PM
Originally Posted by IMBoring25 View Post
Early years only. It's been said '89 was the last year for the self-canceling.
1989 doesn't have them. Think last year was 1987 or 88.
09-05-2011 09:52 PM
hyperbuzzin The auto shutoff is known to be an unreliable feature.
Guess if you put in an electronic flasher instead of a resistor type, that might cause them to not function properly, if they were working before the part was changed.
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