Question about 2006 Honda VTX 1800
My Honda VTX1800C motorcycle's turn signals only work in the warm weather. I already replaced the turn signal relay with no change When I ride to work in the morning and the temp is about 60 degrees, my turn signals have an extremely long delay (up to a minute) before they will flash. When I ride home in the evening and the temp is closer to 90 degrees, the signals work just fine. The left side always seems to respond slightly longer than the right. @
Hi, Joe before testing any electrical component in the Turn Signal Light Circuit it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test because your battery may have 12.5 volts or more but little or zero amps causing the battery to be faulty and must be replaced, "AGM" batteries fall into this category more so than lead-acid types, also before diagnosing any turn signal/running light/parking light issue make sure the bulb is good and the light fuse has continuity with a test light. If you have replaced your OEM lights with one or all LED lights you are going to need a load equalizer.
If no turn signals are working the cause could be a faulty turn signal module/flasher or the connector going to it, look for corroded, loose, or broken pins/sockets. Contact spray cleaner is great for removing corrosion.
If your turn signal comes on but takes several seconds before it starts flashing you may have dirty contacts in the turn signal switch/button, the switch needs to be opened up and cleaned also the flasher may be starting to fail. It should be noted that cold weather will only exacerbate the situation especially when temperatures drop down below freezing and the location of the component, turn signal switches on the handlebar are at the mercy of the oncoming freezing 70 mph wind and makes it hard for the contacts to do their job covered in frozen grease/grime
If all four turn signals flash at the same time like hazard lights even though you only pressed one turn signal button then you have a LED light in the circuit and need a load equalizer that can be purchased from any motorcycle parts supplier.
If your speedometer does not function properly it will have to be fixed first because your turn signal module gets the data from the speedometer for normal turn signal function.
If your front turn signals don't work use a test light to check for power and ground at the bulb socket, then start backtracking the wiring through every wire connector to the turn signal switch/button and check for continuity, go all the way back to the fuse if necessary to find the cause of the malfunction.
If your rear turn signals don't work check your rear fender wiring harness connector first, for corroded, broken, loose pins/sockets, power, and a good ground, the harness connector is usually located under the seat on the front of the rear fender then keep tracing the wiring look for obvious harness damage caused by the rear tire.
If you still can't find the malfunction backtrack from the rear fender wiring harness connector.
If one side does not work you could have a faulty turn signal switch or module check for continuity.
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.
Turn signal problems in cold weather
Turn Signals Don Work when Cold
Honda VTX1800R Owner Manual service manual, not owners. https://www.partsfish.com/page/oem-parts-for-honda
Honda VTX1800R Owner Manual
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Posted on Dec 02, 2017
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Posted on Jan 02, 2017
From your good description I would say either a bad earth or corrosion.
Check bulbs too as wrong wattage can cause grief.
Make sure all bulb contacts inside holder are not corroded (With ignition OFF) also the sides are clean too for good earthing, still a problem? then check all wire connections to each indicator, a little WD40 or similar all round is a great help when doing this.
Posted on Jan 16, 2009
I'm new to this site but actually has fielded a question about a Triumph motorcycle I'm worrking on!
I have an '03 Anniversary Deuce and I ran into (not the exact) but similar problem. My bike has the bars internally wired from the grips all the way through the top triple tree. Somehow over time the turn signal wire got shorted "internally". You might want to just unbolt the turn signal switch from the bars to see if the wire got pinched up high. If not...move the wires around to see if that helps. If it does...ultimately you should re-wire the connections. Just my experience...good luck!
Posted on Feb 10, 2009
Check the ground wires on both of the right turn signal lamps.
Be sure the lamp sockets aren't corroded. Be sure the pins at the bottom are clean and make good contact with the bulb bases.
Rapid flashing usually means a bulb is out.
Posted on Jun 16, 2009
If you have two wires that go to the turn signal and they don't work one way. You could try them switched around.
This is for a turn signal that is NOT also a running light. (Yellow Lens to Rear)
Use a test light and turn on the turn signal test both wires with the test light clipped to the ground or chassis of the bike. The wire that causes the light to blink will be the positive or hot side. That wire should attach to the bottom of the bulb.
The other wire is the Ground or common and that should attach to the side of the bulb holder.
Posted on Jun 07, 2011
Testimonial: "Thank you, as this seems logical. I will give it a try."
SOURCE: My 2003 harley sportster turn
Your bike does not have a "relay" or the old style "flasher unit". It does have a "turn signal microprocessor". I have a troubleshooting guide for an earlier model. There may be some differences in the wiring color codes but the principle should still be the same. Contact me at firstname.lastname@example.org and I'll send you a copy. Don't forget to remind me of what you want.
Posted on Sep 01, 2011
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