Question about Harley Davidson Motorcycles
Battery full, lights, horn, security sys lights etc all come on strong replaced FOB batteries still bike will do nothing when I try and start it. Could it be a blown fuse? If so where would I find that fuse?
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Posted on Jan 02, 2017
SOURCE: Bike won't start, battery bulged
Chances are it is the rectifier/regulator which is a sealed unit that has to be replaced if faulty. A bad one can cook your battery as well as your light bulbs and wiring. To check this connect a VOM across your battery terminals while the bike is running. If normal you should see about 13.5 volts. If your voltage climbs up to the 18 to 22 volt range or higher you must replace the part before you do further damage. Also be aware of the dangers of over charging a battery as it can explode and cause personal injury. If your battery has been cooked you will have smelled sulfuric acid and the battery will become hot to the touch. If that is the case you will also have to replace the battery as well as it will no longer hold a charge. When this happens the battery will bulge and this is called plate bow. By replacing both the battery and the rectifier/regulator you should be as good as new. In very rare instances it could be the stator which could cost a lot more but chances are its just the rectifier/regulator. I've seen them for very cheap prices on Ebay.
Posted on Aug 01, 2009
I know this sounds aomewhat general, however please give the following some thought:
Check your relays, if you have an aftermarket horn you may have a different relay. To troubleshoot unplug your headlight, unplug your horn, etc.. Turn your ignition switch to accessory only. See if the fuse pops. If it does unplug whatever added accessories you may have still have plugged in. Once you can get the fuse to stop popping, turn the ignition switch to on. Then one at a time plug you accessory, headlight, etc. back in. When you find what pops the fuse, unplug that item, start plugging in the other items, if the fuse has not popped you have potentially isolated the circuit causing the issue. Now check the wiring for loose connections, bad ground, and CHECK the relay if that item has one. Hope this helps,
Posted on Aug 19, 2009
under the seat there is a reset button that taked a metal prong thingie (dont know whent it's called) you can use a paper clip - just jump the two terminals and try to start it,, doesnt happen all the time but it does happen.
Posted on Jul 23, 2010
SOURCE: Rocket 3 wont start. dials dead
Lift the tank. Underneath it you'll find a plastic connector block joining loads of wires together. Turn the ignition on and push this connector block together, or twist it around a bit. If the ignition sequence starts, it'll be because the wires in the connector block are corroded. Moving the block sometimes makes a temporary fix, but ultimately it'll happen again until the block or the wiring harness ideally, is replaced.
Posted on Aug 03, 2010
sounds like the problem is your battery is not charging when you are riding. The most common cause is a faulty regulator / rectifier. Contact a motorcycle wreckers for these parts, or your yamaha dealer.
Easy way to test is, when your bike is running, and the lights start to dim, before the bike shuts down, using a volt meter, test the voltage at the battery terminals, should be about 14V. If faulty rectifier,no charge going in to your battery, then the reading will be low, about only a few volts. If you dont have a volt meter, then any mechanic shop can do this test for you. best to have this done before buying any parts.
Posted on Aug 11, 2010
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