Question about Honda CB 750 Motorcycles

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I have a 1980 honda cs750 custom and headlight don't work. I have power to headlight fuse but none to the headlight itself. it is not a cb750 but it is the closest one to choose Thanks Ed Brooks

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  • Master
  • 10,319 Answers

Remove the Head Lamp Switch and check continuity to the contacts.. It sounds like a faulty switch

Posted on Jun 02, 2010

  • 1 more comment 
  • pastored Jun 02, 2010

    There is no power going to the switch at all.

  • frank thomas wilson
    frank thomas wilson Jun 02, 2010

    Check all plug in connections under the fuel tank

  • pastored Jun 02, 2010

    I was working on that and it got dark and mosquitoes came out. the wiring seems to go from the wiring harness to fuse box and back under the tanks somewhere and back to the light. I was hoping to find a wiring diagram somewhere because this I can't seem to locate the exact wire for the lights.

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Need to remove flywheel on cb750 1981 model to repair starter clutch Any ideas on how to remove


Hi, Stephen for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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Oct 20, 2016 | Honda CB 750 Motorcycles

1 Answer

I have a 84 Honda NightHawk 700s and I turn on my bike and the headlight does not turn on unless I hit the hi beam switch, what could be wrong in the wiring?


Hi, Anonymous if your headlight is not working the first thing to check is the headlight bulb for damaged filaments then check your light circuit fuse, that being said the usual suspects are:
1. Faulty ground or power supply to headlight bulb socket.
2. Faulty hi/lo beam switch.
3. Faulty ignition switch.
4. Fuse is good but no continuity on both sides.
5. Faulty wiring between battery positive and headlight bulb socket.
For more information about your issue, please visit the websites below. Good luck and have nice a day.
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Dec 07, 2015 | Honda Motorcycles

1 Answer

My headlight wont come on 1980 yamaha rs 500


Check fuses and bulb, if none, check wiring. It might not be as simple as seek and replace. It is a 1980 you know.

Feb 04, 2014 | Yamaha Motorcycles

1 Answer

Need help with wiring


you need to get a book for it they are 15 dollars at bike bandiat

Jul 22, 2013 | Motorcycles

1 Answer

Need help with wiring tail and brake light and tur


the 80 Honda cb750 I had was a custom chopper so it didn't have turn signals but my tail light brake light had 3 wires green green/yellow stipe and brown with your ignion on the brown or the solid green should be hot always a test light will let you know which the other is grown also use your test light to tell both turn signals grounds ground with brake/tail light your wire for your brake light will light up while test light grounded key on an pressing break peddle or handle either one wish I still had my manual so I could tell exactly what wire is what for you but it is simple with a 12v test light to find them

Jul 22, 2013 | Motorcycles

1 Answer

1996 honda 750 nighthawk headlight doesn't work fuse is ok ,bulb is ok


Hi, Anonymous 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:
1. Faulty ground or power supply wire to headlight bulb socket.
2. Worn down solder contacts or loose fit of the bulb base in the socket due to vibration.
3. Worn, chafed, or broken wires in the light circuit.
4. Corroded, broken, or loose pins/sockets in wire connectors.
5. Faulty hi/lo beam switch.
6. Faulty ignition switch.
7. Fuse is good but no continuity on both sides.
8. Faulty headlight relay.
9. Faulty wiring between battery positive and headlight bulb socket.
10. Weak charging alternator/generator/lighting coil
11. Faulty voltage regulator/rectifier ground or overcharging.
For more information about your issue and valuable "FREE" downloads that you will need for viewing and printing please click on the blue links below. Good luck and have a wonderful day.
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Dec 14, 2012 | 1996 Honda CB 750 Nighthawk

1 Answer

Fuel gauge doesn'twork on a cb750 honda nighthawk


Hi, Anonymous and the usual suspects are:
1. Blown instrument fuse.
2. Faulty sending unit.
3. Faulty wiring between sending unit and gauge.
4. Faulty ground or power connection.
5. Bad fuel gauge.
For more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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http://www.partsfish.com/page/oem-parts-for-honda
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Mar 27, 2012 | Honda CB 750 Nighthawk Motorcycles

1 Answer

Where is the relay box in the 85 chevy camaro for the fuses...not the fuse box tho...also I just put new head lights in and they don't work now what could be the problem....they arn't broke


There is no relay box in a 1985 Camaro. There is a circuit braker built into your headlight switch and a separate one in the fuse box for power accessories. There are fusible links in the engine compartment but none are related to headlights. There is one by the starter solenoid and three up by the junction block on the firewall. One is for the block itself and one for the alternator and oone for the ammeter.

I would try replacing the plug-ins for the headlights first. Those will go bad although you can usually wiggle them around and get the lights to at least flicker. If not them then the headlight switch itself is likely bad. Hope this helps.

Aug 22, 2011 | 1985 Chevrolet Camaro

1 Answer

Honda cbr 929 headlight and turn signals dont work and fuses are good


headlight and turn don't come on all fuses are fine power to all connectors no short,how are these lights grounded or cdi trouble tell me what imissed thanks

May 22, 2010 | 2000 Honda CBR 929 RR Fireblade

1 Answer

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.

Apr 27, 2009 | 1993 Honda CB 750 Nighthawk

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