electrical problem - Honda Shadow Forums : Shadow Motorcycle Forum
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post #1 of 11 (permalink) Old 06-09-2019, 05:14 PM Thread Starter
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electrical problem

My 2004 Shadow 750 Aero has always been totally reliable till today. When I hit the starter switch I heard a small click and neutral light went out(no cranking, just dead, no response to further starter sw or ignition sw.) After about half hour after checking fuses tried starter again and again click and neutral light is gone and all is dead. Battery charge is good.
Would greatly appreciate any suggestions.

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post #2 of 11 (permalink) Old 06-10-2019, 12:27 AM
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How do you know the battery charge is good? If you have meter, put the leads on the battery and try to start the bike. If the voltage drops way off, your battery is probably toast.

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post #3 of 11 (permalink) Old 06-10-2019, 01:26 AM
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Loose or corroded battery terminals or grounds could do that.
Or ignition switch contacts.

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post #4 of 11 (permalink) Old 06-10-2019, 08:35 AM
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Originally Posted by jpr1968 View Post
How do you know the battery charge is good? If you have meter, put the leads on the battery and try to start the bike. If the voltage drops way off, your battery is probably toast.
Also @swifty2014 's items should be checked, cuz your battery won't charge properly when the bike is running with loose/corroded terminals. I'd bet your headlight is awful dim, if lit at all, when you turn your switch on. Making sure it's on low beam will help reduce draw on the battery until you get the bike running. On many bikes, the cranking circuit cuts the light and accessories to allow the starter to hog the juice so the light goes off while cranking. If your connections are tight, my vote is for a dead cell in the battery.

If it jams, force it. If it breaks it needed replacing anyway.
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post #5 of 11 (permalink) Old 06-10-2019, 07:34 PM Thread Starter
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Battery has been on trickle charger/tender and shows fully charged. Everything is dead no response to starter switch or ignition switch, lights etc. DEAD
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post #6 of 11 (permalink) Old 06-10-2019, 10:33 PM
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I think it may be time to pull the battery and go to your local parts store and have it load tested. Your tender likely only will give an indication of acceptable voltage, but you may, in effect have a 12-volt battery that doesn't have enough amperage to light a bulb. Just for kicks, if you have a 12v bulb and socket lying around, disconnect the temder and jumper the bulb across the battery terminals and see if it is producing enough juice to even light a bulb. Just a thought.. Or just take a piece of 18 ga. wire long enough to bridge the battery terminals and see if you get a resounding SNAP!/spark.. If not, your battery may have voltage, but too much internal resistance to put out any amps.

If it jams, force it. If it breaks it needed replacing anyway.
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post #7 of 11 (permalink) Old 06-10-2019, 11:20 PM
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Also check your start switch, sometimes the contacts get corroded or burnt it can also affect your lights.

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post #8 of 11 (permalink) Old 06-11-2019, 12:41 PM
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Best way to eliminate a battery as the cause of your woes is to jump it with a non running car battery. Then you can do all the testing you need to with no battery interference.

Only a biker knows why a dog sticks his head out of a car window.
1983 750 Shadow
From the past=
1951 Cushman scooter
1962 Honda 305 Dream
1965 Honda 305 Dream
1971 Honda 175 scrambler
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post #9 of 11 (permalink) Old 06-11-2019, 01:20 PM
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Originally Posted by swifty2014 View Post
Best way to eliminate a battery as the cause of your woes is to jump it with a non running car battery. Then you can do all the testing you need to with no battery interference.

That's a good idea and work from there.


I had a battery that was reading 12 V but when cranking it dropped right off under 8 V. Your battery may show 12 V but not have enough power to actually crank the bike. I replaced my battery, problem solved. Thing was I could hear the starter struggling after a long ride so I knew something was wrong. Has your starter been struggling before this? If so battery is dying or it's not being charged right. Corroded battery terminals or bad ground can cause the problem.



I just cleaned my starter switch because my headlight stopped working. All the contacts were green and pretty well corroded, easy fix. I would take a look at those, it was all of a 15-20 minute job for me. Just watch out for the ball bearing when you open the switch. It's small don't let it roll away.


If all that checks out Time to look at the starter, etc. etc. There are only so many parts on a bike. It's not really that hard to figure out what's going on.

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post #10 of 11 (permalink) Old 06-11-2019, 01:42 PM
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Originally Posted by Steve Von View Post
Battery has been on trickle charger/tender and shows fully charged. Everything is dead no response to starter switch or ignition switch, lights etc. DEAD
Don't trust that the green light is correct. Get the battery load tested.

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