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Challenger
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« on: November 08, 2020, 03:41:24 PM » |
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I installed an "LED" tail and brake light bulb a few weeks ago. No other LED bulbs on bike.No problems until I walked out into the dark garage tonight and see a low glow from tail light. Bat voltage is 12.68 and all light switches are functioning as well as brake light switches. I disconnected battery and it took 10 to 15seconds before the tail light went out. Will start diagnosing tomorrow, but have a question. Do you think beings it takes several seconds for the glow to go out, that is is back feeding through a radio circuit or a relay coil somehow? I will report back if I figure it out.
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gordonv
Member
Posts: 5760
VRCC # 31419
Richmond BC
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« Reply #1 on: November 08, 2020, 05:16:23 PM » |
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Do they have capacitors with the lights?
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1999 Black with custom paint IS   |
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Challenger
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« Reply #2 on: November 08, 2020, 05:51:05 PM » |
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Do they have capacitors with the lights?
Negative, It is just a Phillips 1157w LED bulb. I have 9.5 volts on the brake light wire "with ignition off", If I squeeze the brake lever, I loose the voltage so it's very low amperage. I disconnected the brake wire that goes to my Audiovox cruise and the glow went out. It must be feeding through the cruise control some how. Probably been that way since install 10 years ago but didn't notice it with incandescent bulb. |
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Steel cowboy
Member
Posts: 1284
Moving ahead so life won’t pass me by.
Spring Hill, Fl.
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« Reply #3 on: November 08, 2020, 05:56:31 PM » |
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I would think it’s a memory circuit, since it needs power all the time. Might be more than just your cruise control. Pull one fuse at a time until it goes out. Then reinstall it and pull another
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2001 black interstate
2003 Jupiter Orange wing
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Challenger
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« Reply #4 on: November 08, 2020, 06:11:23 PM » |
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I pulled every fuse in panel and light still glowed. I did not pull the pod and remove fuse for the servo actuator though.
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Timbo1
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« Reply #5 on: November 08, 2020, 10:13:24 PM » |
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I pulled every fuse in panel and light still glowed. I did not pull the pod and remove fuse for the servo actuator though.
Could you perhaps put a diode on the cruise sense line to prevent it from back feeding your brake circuit? I'm thinking it should only sense when 12v is applied once brakes are engaged but not to place a voltage in the circuit??? |
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Jims99
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« Reply #6 on: November 09, 2020, 06:04:34 AM » |
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It doesn’t take much for a LED to glow. It’s most likely a back feed from the cruise. It’s hooked to brake light switch to cancel when applied. Maybe try a cambus LED bulb. They have resistance for newer vehicles, otherwise the computer thinks there is a burned out bulb. That may stop the glow.
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The light at the end of the tunnel, is a train.
99 tourer
00 interstate
97 standard
91 wing
78 trail 70
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da prez
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« Reply #7 on: November 09, 2020, 08:04:06 AM » |
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V E R I F Y all ground connections.
da prez
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Challenger
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« Reply #8 on: November 09, 2020, 12:06:19 PM » |
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V E R I F Y all ground connections.
da prez
Checked and cleaned all ground connection including the frame ground. Disconnected all connectors and checked for voltage. It is definitely the Audiovox that is bleeding back to the brake circuit. I will just leave it disconnected until I do my winter maintenance and try to figure out whats up. Thanks everyone for their replies. |
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Madmike
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« Reply #9 on: November 09, 2020, 02:45:43 PM » |
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Got a radio?? Does it have a clock in it?? Most vehicles that is a constantly powered circuit if it exists. could be finding ground via the taillight bulb.
I was installing some 24Volt string lights the other day for my wife and they were not plugged into power. As I was installing them I noticed LEDs flickering. I played with it and could get about 5 leds to light via my thumb on a connection - must be a static charge I'm guessing. Someone said it doesn't take much to light an LED, it apparently doesn't.
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Jims99
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« Reply #10 on: November 10, 2020, 04:35:57 AM » |
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Hey, Jim. Do we consider the problem to be the glow, or a potential drain on the battery? The glow shows there is power where it is not expected. Installing a resistive LED bulb may stop the glow and still put a small drain on the battery when the bike is not generating.
. Most likely just a glow. With your old incandescent bulb, the draw was still there, just not seen. If you go back to old bulb and see nothing, I would say it’s fine. Takes very little to glow an LED. And yes, the static from you can glow them slightly. |
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The light at the end of the tunnel, is a train.
99 tourer
00 interstate
97 standard
91 wing
78 trail 70
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MarkT
Member
Posts: 5196
VRCC #437 "Form follows Function"
Colorado Front Range - elevation 2.005 km
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« Reply #11 on: November 10, 2020, 11:57:47 AM » |
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Sounds like you have some good tips to help find it. Might want to check your bat voltage with a good digital meter and document it. Check again say a week later to see if it's gone down any. Until you find & stop it, might want to put on a trickle charger to prevent damaging the battery. I keep a spare battery on a trickle charger that's plugged into the garage door light. With ea use of the door it gets about 5 minutes of weak charge. The 2 Valks and the Magna which are kept in running order, get periodic charges if they aren't seeing regular enough use. Been neglecting Deerslayer and the wing for awhile...
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John Schmidt
Member
Posts: 15202
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« Reply #12 on: November 10, 2020, 12:29:26 PM » |
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Do you have a relay in the brake wiring coming from the cruise control? Often needed when using an LED. If LEDs or certain brake modulators are used, the servo won't function because it's not grounded properly. With incandescent bulbs it's grounded through the bulbs, not so with LED. Get a normally closed relay at an auto parts store, then connect as follows:
Purple wire from servo to terminal #30
Ground terminals 87a & 85
Braked light wire to terminal 86(usually green/yellow)
This relay consists of a coil (terminals 85 & 86), a common terminal (30) and a normally open terminal (87). At rest, there is continuity between terminals 30 and 87. This grounds the Servo. When the coil is energized, continuity between terminals 30 and 87 will be broken. Since the Servo is not grounded anymore, the cruise control is then cancelled. This should also kill any stray voltage.
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Jims99
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« Reply #13 on: November 11, 2020, 04:48:59 AM » |
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I was thinking about it last night and remember reading about the cruise grounds through the light. John is 100% right. You will need to add relay for cruise. It’s an easy job.  |
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The light at the end of the tunnel, is a train.
99 tourer
00 interstate
97 standard
91 wing
78 trail 70
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Jersey
Member
Posts: 545
VRCC #37540
Southern Maryland
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« Reply #14 on: November 11, 2020, 05:57:58 AM » |
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Here's a link to the Rostra Cruise Control (aka AudioVox). It shows the fix that is needed when using LEDs instead of incandescent bulbs. Hope this helps. http://www.rostra.com/manuals/250-1223-faq.pdfJersey |
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Jersey
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Challenger
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« Reply #15 on: November 11, 2020, 07:30:24 AM » |
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Thanks "Jersey" & "John", I am going to try that fix. I am beginning to believe that the transient voltage on the purple wire is normal and just unnoticeable with the stock light bulb. As I had just recently installed the LED I had not tried the cruise to see if it worked. I may hook the brake wire back up just to see for sure. Thanks again everyone for the help. This board rocks. |
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jdp
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« Reply #16 on: November 15, 2020, 06:48:33 PM » |
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They sell resistor kit that wires into your led harness very simple to have your lights to work correctly, I installed some led turn signals on one of my other bikes and the turn signal would not turn off even with the key out for about 30 seconds, I installed the resistor kit and everything is fine
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John Schmidt
Member
Posts: 15202
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« Reply #17 on: November 22, 2020, 12:38:44 PM » |
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So Challenger, did you ever discover the problem, curious minds want to know how things turned out.
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Challenger
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« Reply #18 on: November 22, 2020, 02:11:16 PM » |
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Getting back to it this week. Will keep you advised. Relay should be here tomorrow.
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John Schmidt
Member
Posts: 15202
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« Reply #19 on: November 22, 2020, 02:41:30 PM » |
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You ordered it? Most any auto parts store will have one that serves the purpose. I'll be interested to see how it works out for you. |
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Challenger
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« Reply #20 on: November 22, 2020, 04:05:57 PM » |
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A friend of mine is mailing me a solid state electronic relay to try. About the size of a nickel. I |
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