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Makotosun

Head light/Tail Light trouble shooting

  • RT3Sam
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So I want to get my lights working on my RT3 but I don't know where to start. Here's what I do know:

- I have a good light. It works directly off the battery.
- I have a good tail light. Brand new system from Preston Petty (Came on Fender Kit)
- My ignition switch switch seems to work fine.
- My handle bar switch is brand new and works fine. I even checked it using resistance.
- My turnsignals and brake light work great.

All this stuff works, but I don't have a head light and tail light while running. I know it seperate from the battery system. Do I have a bad lighting coil and how would I check that?

I appreciate the help
Sam
07 Mar 2021 05:14 #1

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Replied by Gr8uncleal on topic Head light/Tail Light trouble shooting

Have you turned the ignition key into the second click round?
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07 Mar 2021 05:19 #2

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Replied by MarkT on topic Head light/Tail Light trouble shooting

If a US model, the RT3 taillight runs off the battery by law.  Only headlight and gage illumination lights run off the engine.  So yes, make sure key is turned to "lights on" position.

 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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07 Mar 2021 07:15 #3

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Replied by RT325 on topic Head light/Tail Light trouble shooting

Find a yellow from the mag & see if it has AC voltage. Not only yellow but there probably three different colors coming off the lighting charging coils with different voltages when running. Maybe hook up a 12 volt car high wattage bulb if you have an old one under the bench-- to avoid blowing your good 6 volter while playing around testing. Not sure what voltage you'd expect with a rev out of the yellow but maybe 15 free volts with no bulbs.
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07 Mar 2021 15:21 #4

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Replied by RT3Sam on topic Head light/Tail Light trouble shooting



Yes,  have run the bike with the ignition switch in the 2nd or lights on position. still no head or tail light..
07 Mar 2021 16:13 #5

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Replied by MarkT on topic Head light/Tail Light trouble shooting

Would you mind posting a picture of your new handlebar switch?
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
07 Mar 2021 20:24 #6

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Replied by RT3Sam on topic Head light/Tail Light trouble shooting



  Sure, when I get back to the garage. It was a cheap china knock off I purchased on e-bay for $13 and free shipping. Main difference was it has a ground wire instead of grounding to the handle bars. Had no directions, so we had to take the time to meter the wires to figure out what switch operated what function. 
08 Mar 2021 16:25 #7

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