Question about 1982 Moto Guzzi V 50 II

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1979 moto guzzi v50 , red battery light on dash does not go out.

Alternator coils measure ok and charging voltage can be measured at battery. Rectifier and regulator are not very accesible to check out.

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Http://www.manualz.info/


try here for a manual


hope this helps

Posted on Jan 18, 2009

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Hi, Bob if your headlight is not working, only one beam works, keeps burning out, blinking, dim or surges from bright to dim to bright the first thing you need to check is the headlight bulb for damaged filaments then check your light circuit fuse, then check your head light bulb socket ground wire for a clean tight connection, that being said the usual suspects are:
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My Bike Wont Charge The Battery And Need To Know How To Test The Alternator Output?


put a test meter (reading VOLTS DC in the 20V range) across the battery terminals. It should read 12V. Now start the engine. The reading across the battery should be 13-14V or so. If it is any less, then the alternator isn't charging. If it goes up a lot when you rev it then the voltage regulator is faulty. Hope this helps.

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1 Answer

2000 Moto Guzzi V11 Sport not charging


Hi, Harvey18453 before testing any electrical component in the Charging System it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage, the battery is faulty and must be replaced. AGM type batteries fall into this scenario more so than lead-acid batteries.
1. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
2. To check the regulator unplug it from the stator. Take a test light and clip it to the negative terminal of the battery and then touch first one pin and then the other on the plug that goes to the regulator. If you get even the slightest amount of light from the test light the regulator is toast.
To do this with a meter: black lead to battery ground, red lead to each pin on the plug, start with the voltage scale higher than 12vdc and move voltage scale down in steps for each pin. Any voltage is a bad regulator.
3. On the other part of the disconnected regulator plug. Set the multimeter for Ohms x1 scale and measure for resistance across the pins of the stator. You should read something around 0.1 to 0.2 ohms for a 32 amp system.
4. Then check for continuity between each pin on the plug and frame/engine ground. The meter needle should not move (infinite resistance)(digitals will show infinite resistance) if the meter needle does move (indicating continuity)(digitals will show some resistance), recheck very carefully. If the meter still shows continuity to ground the stator is shorted (bad).
5. Set the meter to read A/C volts higher than 30 volts (the scale setting for voltage should always be higher than the highest voltage you expect or you may fry the meter). Start the bike, and measure from one pin to the other on the plug (DO NOT cross the multimeter probes! - touch them to each other). You should read roughly 16-20 vac per 1,000 rpm.
6. If the battery was good under load test, if the stator is NOT shorted to ground, and the stator is putting out A/C voltage, then the regulator is bad (most likely even if passed step 2)
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My 2000 Chevy Blazer battery light is on. This


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Battery warning light coming on after a mile , but battery isnt flat and car starts 1st time and lights are ok Car is puegeot partner combi. Stop car and it and it ok for another mile . Battery doesnt seem...


Check your alternator as it sounds like it may be starting to go. The battery light trips when it detects an issue with the charging system. Very rarely, the battery light can trip if there's an issue with the PCM, but this is very rare.

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Yoke


but wondered if there were any other models that owners knew of that shared the same yoke.? Should be the same on the V50 from '77-'84. Also the V35 II. Used parts suppliers are out there - or ebay.,

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