Topic: 400F slow blinkers

[tory b]

  The turnsignals on my 75 cb400f blink really slow.Any input on how the fix it?

[bollingball]

Clean all contacts in the circuit and get a solid state flasher from any auto parts store. The thermal flasher that came with the bike needs a fully charge battery.

Ken

[tory b]

  I will check all the connections,but the battery is new and all other electrical devises are working fine.
Could a bad thermo flasher cause this?And where is it?

[Jerry Rxman Griffin aka MuthaF'er]

But what is the voltage of that new battery when the flashers are slow?! First/easiest thing to check/eliminate for us to help.

On my bike I use that as my voltage indicator since my high performance coils use more power and the battery can get low around town. Blinking slow, down shift/run up the rpms to increase the charging system output then the headlight brightens and the turn signals speed up and I make it home just fine.

[Bodi]

If front and rear signals are good and bright but flash slowly, replace the flasher. This is likely to be all that's wrong.

[tory b]

Although the headlamp brightens a little when I rev the engine,the tursignals do not speeed up.

[tomkimberly]

  I will check all the connections,but the battery is new and all other electrical devises are working fine.
Could a bad thermo flasher cause this?And where is it?

The flasher unit is located at the back side of the battery box. There are three wires however ony two are used. Replace with any 12 volt unit from your local auto parts store. And yes, it is OK to just let it hang there or you can secure it with a tie wrap.

Tom

[tory b]

  Thanks guys.
I will check voltage tonight,however,they are consistantly slow through out the RPM range.Reguardless of how dim or bright the headlight gets.
  While I am in there I will replace the flasher.

[MoMo]

Make sure you have the correct bulbs and that the sockets are not corroded along with the other suggestions...Larry

[LesterPiglet]

If the wattage of the bulbs is too low they will flash slowly or not at all. I've discovered this after a week of head scratching, my new winkers had 10w instead of 21w bulbs.

[tory b]

Thanks again,
I installed  a 552 flasher can and everything works great.

[adamlwvdc36]

If the wattage of the bulbs is too low they will flash slowly or not at all. I've discovered this after a week of head scratching, my new winkers had 10w instead of 21w bulbs.

+1 on this... seriously, my 75 550 had the same problem when I put some trailer lights on it (until I pulled original lights off my parts bike).  All I did was put bigger bulbs in it and it fixed the problem.  Think of it this way, the flasher is a bimetallic strip that heats up, curls to break the flow of electricity, cools down then makes contact again... then repeats.  Bigger bulbs means more current, means strip heats up faster.  The only exception is if youre using LED bulbs. Then youll have to get an electronic flasher.

Just noticed you got it to work a different way... for anyone else, bulbs work too

[tomkimberly]

Thanks again,
I installed  a 552 flasher can and everything works great.

Good job!