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1982 Honda Nighthawk 650 keeps blowing the main 30amp fuse

I was riding my 82 honda nighthawk 650 and lost all power.it was the 30 amp fuse that looks like a monkey wrench.I replaced it but blew it 3 more times trying to get home.the stator cover and wires seemed to be getting real hot.what would cause the stator to get hot.?a short somewhere? @

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  • Honda Master
  • 51,745 Answers

Hi, Searay185spo before diagnosing your blown fuse issue, check the bottom of your seat, if its metal and comes in close proximity to the positive battery post you need to take the necessary steps to ensure there is no contact (electrical tape, thick rubber insulation, hammer a dent in the seat bottom etc.) You are going to need a wiring diagram from your service manual, a test light, an ohmmeter and plenty of extra fuses.
If you turn on your ignition switch and immediately blow a fuse you have a hard/dead short and is usually easy to find. With a test light connected to the hot side of the blown fuse holder start stabbing the wire/s that leads away from the fuse holder and towards the ignition switch, you test light will illuminate validating the short. When the test light fails to illuminate you have passed the short and need to back up until the test light illuminates, then look in the immediate area for the short.
If you driving down the road for 30 minutes or 15 miles and blow a fuse you have soft/flying short and may take some time and patience to find.
If the main fuse/circuit breaker constantly blows/trips while riding you probably have a faulty battery terminal connection. Check battery terminals for damage or corrosion, check 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. Any other fuses that constantly keep blowing while riding are usually caused by a loose or corroded ground wire in the circuit, which means you have to check, inspect, test each and everyone with an ohm meter set on a low ohm scale 100 ohms or less . Simply touch one lead to the ground source and the other lead to the battery negative terminal, a reading of zero indicates a clean solid ground. Any number reading or infinity indicates a poor ground and needs to be repaired. Poor or weak grounds require excessive additional amperage to complete the circuit which in turn blows the small amperage fuse.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
1982 Nighthawk CB650SC SOHC Electrical Problems Sugar Land TX
Keep blowing main fuse any ideas
Honda CB650 Manual
https://www.partsfish.com/page/oem-parts-for-honda
Honda CB650 Custom Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Dec 07, 2017

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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Posted on Jan 02, 2017

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Benimur
  • 6966 Answers

SOURCE: 1993 honda nighthawk has no power. I put a new

Hi and welcome to FixYa,

With the indulgence of DickCanFixIt...

Almost always, in instances such as you have described, the main 30Amps fuse of the 93 CB750 (F2P Retro) would have blown. The main fuse is located along with the starter relay. To locate the starter relay, follow the + cable from the battery terminal.

Additionally, once power has been restored, you may want to check the regulator and CDI as they are electronic and therefore prone to damage on reverse polarity.

Good luck and thank you for using FixYa.

Posted on Apr 27, 2009

  • 6 Answers

SOURCE: both turn signals flash

Hey,

Sounds like another 'bad earth' problem to me.

Check that the individual lamps are all properly 'earthed', by running an insulated wire from the frame or engine block to the lamp housing.

You may have to remove the lens and make certain that the bare end of the wire reaches the lamp socket, if the housing is plastic.

If all works OK then, you will have to locate where the open circuit is....quite a chore, but it can be done.

Look for broken wires, or a badly-fitted multiplug, and if all else fails, you may be able to run a supplementary second wire from a convenient point of earth, to the faulty lamp, and leave it connected permanently.

Have a good one, mate.

Posted on May 29, 2009

  • 3567 Answers

SOURCE: 82 honda nighthawk 750

Possibilities are>

  • Wires not hooked up properly or a wire is disconnected
  • Bad rectifier or bad voltage regulator
  • Dirty or loose wire connections
  • Bad stator
Can I get a “very helpful” rating on this answer?

Posted on Aug 18, 2009

Moto-Wiz
  • 34 Answers

SOURCE: what are the readings on stator for a 82 honda 750

The ohms readings are 0.41 - 0.51 ohms between any two of
the yellow wires

All yellow wires should connect or have continuity with each other.

No yellow leads should connect to ground at all.

If it has brushes those should be checked out.
They have a wear line on them.

Posted on Aug 22, 2009

  • 85 Answers

SOURCE: looking for a motorcycle manual for a 1983 honda

Clymer makes one,$35.00.part no. M345,can purchase from most online motorcycle warehouses

Posted on Apr 07, 2010

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Hi, Anonymous before diagnosing your blown fuse issue, check the bottom of your seat, if it's metal and comes in close proximity to the positive battery post you need to take the necessary steps to ensure there is no contact (electrical tape, thick rubber insulation, hammer a dent in the seat bottom etc.) You are going to need a wiring diagram from your service manual, a test light, an ohmmeter and plenty of extra fuses.
If you turn on your ignition switch and immediately blow a fuse you have a hard/dead short and is usually easy to find. With a test light connected to the hot side of the blown fuse holder start stabbing the wire/s that leads away from the fuse holder and towards the ignition switch, you test light will illuminate validating the short. When the test light fails to illuminate you have passed the short and need to back up until the test light illuminates, then look in the immediate area for the short.
If you driving down the road for 30 minutes or 15 miles and blow a fuse you have soft/flying short and may take some time and patience to find.
If the main fuse/circuit breaker constantly blows/trips while riding you probably have a faulty battery terminal connection. Check battery terminals for damage or corrosion, check 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. Any other fuses that constantly keep blowing while riding are usually caused by a loose or corroded ground wire in the circuit, which means you have to check, inspect, test each and everyone with an ohm meter set on a low ohm scale 100 ohms or less . Simply touch one lead to the ground source and the other lead to the battery negative terminal, a reading of zero indicates a clean solid ground. Any number reading or infinity indicates a poor ground and needs to be repaired. Poor or weak grounds require excessive additional amperage to complete the circuit which in turn blows the small amperage fuse.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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https://answers.yahoo.com/question/index?qid=20110725150826AAyiQLb
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Possibilities are>
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Can I get a “very helpful” rating on this answer?

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