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1972 yamaha lt2 100 enduro

Hello I just replaced my flasher relay with a brand new one on my LT2 100 however the the relay engages the lights correctly but they still don't blink. I'm wondering if I have to have a specific load on the relay to make it flash the bulbs. Do I need a load resistor? Thanks for the help

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Don't blink? did you put LED bulbs in the turn signals? if so, the relay probably uses +25 volts DC load at the bulb. Led bulbs pull less load. Make sure that you have the proper bulb in the sockets, and that the relay is rated properly (Load) for the standard setup .

in other words, if the bulbs don't work, or one bulb is burned out on one side, that will make the bulbs blink faster than normal because the circuit is too 'hot' ie: not enough load on the circuit to make the relay work properly.

if its still not working at all, check to see if you have a fuse in that circuit (probably) if its blown it will not charge the relay and they wont work. if its an unfused circuit, which on that bike it probably is, you should test with a volt meter the leads that plug into the relay to see if they have voltage. If they don't, you have a broken wire, or some other issue that's preventing power from getting to the relay. Maybe an issue in the actuation button on the handlebar.

Posted on Nov 26, 2013

Testimonial: "Thanks the flasher I bought is a YHA506 model 115-83350-60-00 which is stock and the bulbs I have in the lights are 6 volt 10 watt I looked on a schematic for the bike and the stock bulb calls for 17 watt it says on the face of the flasher bulb: 21 cp x 2 + 2 cp. The bulbs are standard not LED."

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  • sir_doc Nov 26, 2013

    Flashers, are a resistive device and and respond to resistance, this causes a bi-metalic strip to heat and break contact, as it cools it restores contact - that is why when your light bulb fails it doesn't flash, if you use too high a wattage it will flash faster. (more resistance = Faster heat biuldup).

  • sir_doc Nov 26, 2013

    Relays are an electrical switch and are not normally sensative to resistance

  • sir_doc Nov 26, 2013

    Some Relays have a timer circuit built in and are used for turn signal applications but they are not common in most applications, when switching to LED devices, a power resistor is usually inserted in the line to match the stock Wattage/Resistance profile.


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