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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Voltage spike to 18-19V on high beam socket /cgi-bin/YaBB.pl?num=1509206560 Message started by aj108 on 10/28/17 at 09:02:40 |
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Title: Voltage spike to 18-19V on high beam socket Post by aj108 on 10/28/17 at 09:02:40 Good morning! I tried my best to troubleshoot this one without posting since I've asked so much lately but I have hit another point of confusion. I put a brand new headlight bulb (Philips 9003 - http://ow.ly/bOmM30gbYge) into my bike about one month ago. After ~2 hours of riding time, the low beam was burned out. I switched to high beam and it burned out after ~30 minutes of riding time. I've checked and the bulb itself has charring around the prongs, but all of the wires and the socket is clean as a whistle. So, WTF! I did troubleshooting. Voltmeter connected directly to battery 12.7V with no key in 12.7V - 13.1V started up idle 8.6V - 14.4V revving around 2.5k to 3.0k RPM (my guess on RPM) I think this seems OK and does not indicate a rectifier (or regulator?) problem Voltmeter connected directly to the bulb socket, where I would plug the bulb in I am keeping one prong in the "GROUND" socket of the bulb socket, and then moving the other prong between the yellow/white wire sockets, which correlate with high beam and low beam On the low beam, it is steadily between 12.7V - 14.5V .. revving, idle, etc. On the high beam, it is 0V until I switch the high beam switch on (DUH). Once I switch the high beam on, it runs between 12.7V and 14.5V, even when I am revving. Sometimes the high beam socket spikes to 16.0V - 19.1V when I am rolling OFF the throttle after a high rev That underlined part above is the only worry-some part, but I have just tried to replicate it with a warm bike and it's not budging from 13.7V. Really bad online reviews This is my third solution, if the above high beam spike does not indicate some kind of problem... the bulbs I bought have terrible reviews, some people claiming a 2-week or 2-day bulb life. I have another bulb (pack of 2) that I'll put in right now and see how long it lasts. I think my question is: Does the spike to 19V on the high beam socket when rolling off the throttle indicate a voltage rectifier (or regulator?) issue? Thank you! AJ |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by Ruttly on 10/28/17 at 11:42:41 The rectifier is the only component that controls output voltage of the stator , so it must be your problem. Usually the complaint is slightly lower than normal voltage which is normal. Unless your stator is causing the rectifier to fail from too much voltage. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by Ruttly on 10/28/17 at 11:48:28 Are you using a digital or analog meter ? |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by verslagen1 on 10/28/17 at 11:48:41 check the stator wiring, potentially you have a short to ground. and it could be intermittent, so rotate the crank too. if that's not it, then it's the regulator. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by Ruttly on 10/28/17 at 12:48:38 Versy , Would this harm anything if you started the bike and then unplug stator at rectifier/regulator at then check stator output voltage on each leg ,grounding meter to engine and then check each leg , I think they are the yellow wires ? |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by verslagen1 on 10/28/17 at 13:09:22 183F3E3E26334A0 wrote:
If you unplug before you start, then you are following SSM instructions on checking the output voltage, which should be 100V AC around 5000 rpm. 4241544D414E1418200 wrote:
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Title: Re: Voltage spike to 18-19V on high beam socket Post by batman on 10/28/17 at 13:35:18 Just to add a bit ,the slight resistance is only 1-2 ohms . 100 volts @5000 rpm is ideal ,but can be as low as 80 volts ac(low limit).If your regulater was bad all bulbs that were lit on the bike at the time should have also blown, perhaps you just have a bad headlight socket or those bulbs aren't very good. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by Ruttly on 10/28/17 at 16:15:16 Versey , I was very close,that was just off the top of my head. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by aj108 on 10/30/17 at 07:39:53 Good morning, Thanks for all suggestions I will be checking the rectifier for 80V-100V AC. Ruttly, I use a digital multimeter. My dad told me that analog would be better to catch quick spikes in voltage here, are you getting at the same point? Looks like Batman said at 5000 rpm, that's pretty close to fully open throttle at neutral? Had rain all day yesterday so I left the cover on and didn't get to it. Thanks again! AJ |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by justin_o_guy2 on 10/30/17 at 08:44:46 The singular point I'm seeing is Every wire feeding a lightbulb should be spiking. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by aj108 on 10/30/17 at 09:27:47 J_O_G: that would be true if it was a rectifier issue, right? So the fact that all of my bulbs are not burning out... just the headlight.. proves the rectifier is OK? Maybe I should order the $10 headlamp socket just to see. The socket looks so clean, though, connections are clean. Could just be crappy Philips bulbs too (I thought it was a good American company). Thanks! AJ |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by justin_o_guy2 on 10/30/17 at 09:59:56 Before I went too nuts Fixing stuff I'd probably stick a new bulb in. I would spend more than five bucks. I'm not able to see how a socket creates a spike. I would certainly check voltage at other sockets. With the bulb in, work a test probe into a connector, see what happens under load. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by Papa Bear on 10/30/17 at 11:14:58 Why would a faulty rectifier burn out the headlight and not the tail/running light(s) ?? I'd try another new headlight bulb (and be sure you don't "touch" the glass with bare fingers). I always wash a new bulb with alcohol before installing to remove any contaminants |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by aj108 on 10/30/17 at 11:16:26 Thank you justin_o_guy and papa, i currently have a new bulb in we'll see how long it lasts. I'll try to get a test probe in there from the back of the socket. AJ |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by justin_o_guy2 on 10/30/17 at 12:42:09 Another bulb, in the back of a connector. Paperclip, whatever.. Somewhere on the wiring harness, there is a place. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by Dave on 10/30/17 at 12:57:46 The thing that has prevented me from getting involved in this discussion thread.....is I don't understand how the headlight gets a 18 volts spike without anything else getting the spike? Do you notice the lights flickering? All of the lights should be showing an increase in brightness with 18 volt spikes! I believe the charging wire from the voltage regulator goes to the positive battery terminal before the power goes to the ignition switch - so if the voltage regulator is creating the spike.....it should be going everywhere in the system. You can get all kinds of cheap voltmeters to install on your bike that allow you to monitor the voltage as you ride. https://www.ebay.com/itm/Red-LED-Digital-Waterproof-Voltmeter-A-Gauge-Meter-12V-24V-Car-Auto-Motorcycle/322357625343?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649 https://www.ebay.com/itm/Waterproof-Motorcycle-USB-Phone-Power-Charger-Blue-LED-Voltmeter-For-Sports-Bike/322821989199?hash=item4b29b0a34f:g:HKEAAOSw2OlZ3zwM&vxp=mtr https://www.ebay.com/itm/Red-LED-light-Car-4-2A-Dual-USB-Charger-Socket-Voltage-Voltmeter-Motorcycle-12V/253225175808?epid=628199015&hash=item3af5658b00:g:9hUAAOSwH71XPEHk&vxp=mtr https://www.ebay.com/itm/12V-Digital-LED-Display-Voltmeter-Car-Motorcycle-Voltage-Volt-Gauge-Panel-Meter/253143136758?epid=2230190843&hash=item3af081b9f6:m:mqJDiFmaENv7_w8erv3yGDQ |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by Ruttly on 10/30/17 at 19:13:55 Yes I was going to advise a analog meter(old school) I have both cause a digital meter moves so fast,analog is easier to pickup spikes. You will test the 3 yellow wires coming out of stator for ac voltage. You can also ohm test each leg , ground it to the engine , but that won't show difference in voltage. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by batman on 10/30/17 at 21:02:39 when you test for ohm s your doing the test between each of two of the yellow stater wires (three readings),not to ground. a reading between 1-2 ohms tells you have conductivity, and your windings are good . |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by aj108 on 10/31/17 at 08:29:44 Hi All, I put a brand new bulb in last night after work and I rode off to class, about a 15 minute ride, city driving. This is the second Philips 9003 (they come in a 2-pack). High and low beam working. J_O_G unfortunately the bulb blew before I could test with a good bulb in, but I'll try again once I get a new (higher quality) bulb. When I turned my bike off, the lights were working. When I turned it back on at night, 4-5 hours later, both high beam and low beam were off. This is different than what happened to the last bulb. Low beam burnt out first, then high beam burnt out the next day. I am suspicious.. perhaps when I turn the bike off using the handlebar on/off switch, it is sending some voltage spike to the headlamp. What else could be burning the bulb out WHILE the bike is off? NO OTHER BULB IS HAVING A PROBLEM -- as a matter of fact, I haven't replaced a bulb in 2 years of riding besides this head lamp and an entire turn signal swap after a kid pulled my bike down and snapped it off. There's no flickering, no super bright lamps or anything of the sort. Dave, thanks for joining the conversation. On the high beam wire, I could produce the 16-19V 25% of the time, and could never produce it on the low beam. Once the bike was hot, I tried and tried to produce the 16-19V spike on the high beam again but I could not. It's probably not the regulator (is regular the same as rectifier?) according to the fact that no other bulbs are burning out. Ruttly, I saw the analog meter and almost bought it just because it was so cheap. I don't think it will hurt to have one in my tool kit. Batman/Ruttly, if I have enough daylight after work today I'll get out there and test the ohm/AC on the stator wires. When I do OHM, it is correct that I want to have the bike off right? Thanks so much! AJ |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by verslagen1 on 10/31/17 at 09:01:29 what year is your bike? |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by Dave on 10/31/17 at 09:04:20 It is both a regulator and rectifier....it converts the AC current from the alternator into DC, and it also changes and limits the charging voltage to somewhere around 14 volts. I really have no idea where the extra voltage would be coming from in a way that only affects the high beam headlght. There is an orange wire that carries the power from the ignition switch up to the left handlebar elect control. From there the H/L beam switch sends the power down the white (low beam) wire ....or the yellow (high beam) wire to the headlight. About half way between the switch and headlight a small yellow wire is spliced into the large yellow wire - and the small yellow wire goes to the high beam indicator light above the speedometer. So......if the high beam is getting extra power the low beam should be as well - unless somehow the small yellow wire to the indicator light is picking up extra voltage somewhere. The only place on the bike that can create weird voltage spikes if the regulator/rectifier is working....is the (-) lead to the coil - and I don't know how the yellow wire and the (-) coil wire could be cross communicating. One wiring thing that does occur fairly common is the wiring harness that goes into the headlight from the left switch - it is bent every time you turn the handlebars - and it is not uncommon for the yellow or white power wire....or the black ground wire to become broken and create a head light power issue - however that creates a "no power" situation rather that "too much" power. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by aj108 on 10/31/17 at 09:42:57 Dave-- thanks very much for all of the detail, I will be re-reading and inspecting this switch and the wires around it. I'm also going to run some tests of the rectifier just to get experience. Verslagen - my bike is a 2008. Something has always confused me, on BikeBandit, they only show Pillion Handles on the 2007 model, and they show no Pillion Handles on the 2008 model. But, my VIN is a 2008 and it has the Pillion Handles. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by verslagen1 on 10/31/17 at 09:49:15 On the '05 model, they changed the starter switch to turn off the headlight when you push the starter button. Maybe you got so sort of surge/noise going on. clean the switch. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by aj108 on 10/31/17 at 10:26:41 Will do this! Thank you! AJ |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by justin_o_guy2 on 10/31/17 at 12:13:22 Protect your tank, spray contact cleaner in it, flick it back and forth. If you take it apart, sweep up first, and lay a towel down to catch small parts. Go slow, be careful. There's a spring in there. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by aj108 on 11/02/17 at 09:03:02 J_O_G I've been thinking about what you said since you said it... I am about to start taking it apart and now I realize I should spray contact cleaner before I go through the problem of taking it apart. THANK YOU |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by justin_o_guy2 on 11/02/17 at 09:16:02 Yerwelcome.. I hope that fixes it or at Least changes the symptoms and proves that is where the problem is. |
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Title: Re: Voltage spike to 18-19V on high beam socket Post by aj108 on 11/08/17 at 06:55:30 Hi All, It's been ~1 week since I saturated the starter switch with contact cleaner and my AutoZone brand headlight is still going strong. Thanks for the creative solution Verslagen! Thanks to the community for helping me, I'd be in big trouble if not! Respectfully, AJ |
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