Author Topic: name that doohickey!  (Read 1569 times)

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Offline fivestring

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name that doohickey!
« on: February 27, 2013, 08:42:08 AM »


 
 
This little thing is mounted in rubber just above the regulator on a K8.

So what is it? Two wires go to it. One is dark green with red stripe. Second wire is light green with red stripe.
destroying classic metrics one bike at a time
'78 KZ1000A2A hardtail, '78 CB750K, '81 XJ650, '83 XJ650

Offline knowsnothing

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Re: name that doohickey!
« Reply #1 on: February 27, 2013, 08:43:57 AM »
Its the flasher relay
1978 CB750k Green - 811 engine
1978 CB750k Blue - for sale
1974 CB375F Faded Black - had to have that 6th gear
1976 CB400F Red - in many pieces
1973 CB350F TBD - in many pieces

Offline fivestring

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Re: name that doohickey!
« Reply #2 on: February 27, 2013, 08:45:48 AM »
No. That is behind this thing and I just replaced the old flasher with a new one.
destroying classic metrics one bike at a time
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Offline madmtnmotors

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Re: name that doohickey!
« Reply #3 on: February 27, 2013, 08:46:48 AM »
Its the flasher relay

BUZZZZZZZZZZZZZZZZ!

Nope, the little square one is the starter safety. You can see the round flasher relay beyond.
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Offline Deltarider

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Re: name that doohickey!
« Reply #4 on: February 27, 2013, 08:47:13 AM »
It's the diode.
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Offline knowsnothing

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Re: name that doohickey!
« Reply #5 on: February 27, 2013, 09:15:43 AM »
Its the flasher relay

BUZZZZZZZZZZZZZZZZ!

Nope, the little square one is the starter safety. You can see the round flasher relay beyond.

 ;D
1978 CB750k Green - 811 engine
1978 CB750k Blue - for sale
1974 CB375F Faded Black - had to have that 6th gear
1976 CB400F Red - in many pieces
1973 CB350F TBD - in many pieces

Offline LesterPiglet

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Re: name that doohickey!
« Reply #6 on: February 27, 2013, 09:41:23 AM »
Yep, starter safety diode.

'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


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Offline aggiepike

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Re: name that doohickey!
« Reply #7 on: February 27, 2013, 11:05:11 AM »
yup it's that doohickey. good eye, good eye.  ;)
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Offline fivestring

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Re: name that doohickey!
« Reply #8 on: February 27, 2013, 11:46:00 AM »
OK a starter safety diode. So a diode has one-way continuity,  right? This thing allows flow in both direction per my dmm.  What is it's purpose?
destroying classic metrics one bike at a time
'78 KZ1000A2A hardtail, '78 CB750K, '81 XJ650, '83 XJ650

Offline metalhead0283

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Re: name that doohickey!
« Reply #9 on: February 27, 2013, 02:31:47 PM »
id like to know its purpose too...if it aint needed its gone!
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Offline LesterPiglet

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Re: name that doohickey!
« Reply #10 on: February 27, 2013, 03:16:10 PM »
To prevent the starter operating whilst in gear without first pulling the clutch.

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'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

Offline metalhead0283

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Re: name that doohickey!
« Reply #11 on: February 27, 2013, 03:27:48 PM »
sweet its gone then!
77 xs650  81 xs650  76 cb550f  2010 triumph street triple

Offline Patrick

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Re: name that doohickey!
« Reply #12 on: February 27, 2013, 04:44:24 PM »
Only if you plan to kick start only. The diode completes the ground on the starter circuit. You can take it out, but you have to supply an alternate ground.
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Offline LesterPiglet

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Re: name that doohickey!
« Reply #13 on: February 27, 2013, 04:53:40 PM »
I think you can just remove it and bridge it with a wire loop. I had mine bypassed at one stage but can't remember exactly how I did it.

Sent from my GT-S5363 using Tapatalk 2

'Then' and 'than' are completely different words and have completely different meanings. Same with 'of' and 'have'. Set and sit. There, their and they're. Draw and drawer. Could care less/couldn't care less. Bought/brought FFS.


Les Ross.            Certified by a Professional

Offline metalhead0283

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Re: name that doohickey!
« Reply #14 on: February 27, 2013, 06:07:41 PM »
im rewiring my bike...gutting everything out not needed...starter is being removed n no blinkers so anything that goes with that is going
77 xs650  81 xs650  76 cb550f  2010 triumph street triple

Offline TwoTired

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Re: name that doohickey!
« Reply #15 on: February 27, 2013, 06:17:18 PM »
The diode keeps the neutral light from illuminating when the clutch is pulled in, and allows the engine to electric start when either the trans is in neutral or anytime the clutch is pulled in.
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Offline bjbuchanan

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Re: name that doohickey!
« Reply #16 on: February 27, 2013, 06:19:58 PM »
You can delete it by grounding dark green/red wire. The diode is used as a way to make the neutral sensor and clutch safety switch play nicely together

Ground the green/red off the starter solenoid. You can now delete the clutch perch switch and have no ill effects

It is more a redundancy to make a bike more safe for people who don't ride or don't know basics of safe riding. Always check to see if in gear before starting, or pull in clutch. Without it someone inexperienced could really get hurt
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Offline fivestring

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Re: name that doohickey!
« Reply #17 on: February 27, 2013, 09:05:46 PM »
Great answers, thanks gents. I'm leaving mine alone for now, just familiarizing myself to the details of this bike should I find myself roadside with an electrical issue.
destroying classic metrics one bike at a time
'78 KZ1000A2A hardtail, '78 CB750K, '81 XJ650, '83 XJ650