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Offline stay youth

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electronics questions
« on: March 25, 2008, 08:28:55 PM »
hello I'm very new to working with my electrics on my cb400f. my left rear blinker is not working, the idiot light comes on but does not blink. The right side blinker functions perfectly at the idiot light and the blinker. Any suggestions?

Thanks

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1976 cb400f

Offline cafe750

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Re: electronics questions
« Reply #1 on: March 25, 2008, 08:39:00 PM »
Is your bulb burnt out?
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"It's an old motorcycle, the wind is supposed to blow your head around, it's supposed to leak oil, the brakes should suck, and every now and then, it should scare you so bad you piss your pants."



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troppo

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Re: electronics questions
« Reply #2 on: March 25, 2008, 08:44:20 PM »
Check your wiring to make sure you have a circuit and the contacts are clean
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Offline stay youth

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Re: electronics questions
« Reply #3 on: March 25, 2008, 10:12:55 PM »
I believe the bulb is working fine, could it be the winking unit?
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1976 cb400f

Offline bryanj

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Re: electronics questions
« Reply #4 on: March 25, 2008, 10:18:01 PM »
Not if the other side works
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

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Offline SteveD CB500F

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Re: electronics questions
« Reply #5 on: March 26, 2008, 02:22:34 AM »
The blinker system requires the correct load to operate properly as the current drawn by two indicator bulbs causes the bimetal strip to heat and bend (making and breaking the contact). If the load is wrong it will not heat enough and therefore will not flash.

As the RH side works, there is nothing wrong with the flasher unit (as there's only one of them in there!)

You must have a blown bulb (or bulbs) or a fault in the wiring.

Swap bulbs R to L first.

Check the green (earth) wires that come out of the lamp assembly. Are they connected to the frame?

Report back.
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Offline 750goes

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Re: electronics questions
« Reply #6 on: March 26, 2008, 03:54:40 AM »
bad grounding......clean it up....
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