Cdi - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

 
LinkBack Thread Tools Display Modes
post #1 of 10 Old 08-05-2013, 01:57 PM Thread Starter
2nd Gear
 
Join Date: May 2013
Location: Gainesboro, TN
Posts: 114
Cdi

Damocles mentioned( in the thread with the link to Clymers) and clymers supports it, that the CDI needs to see gnd thru a diode or two. I asked(in another thread) if anyone knows if it has to see gnd thru one-or all three -(and, if one suffices for that gnd, how would gnding all three matter? I can't fine a ckt, other than the CDI, that uses that path. Am I missing it? Looks to me as tho it would just eliminate the safety switches?

Jim

Last edited by Jim Sizemore; 08-05-2013 at 02:00 PM.
Jim Sizemore is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 08-05-2013, 03:16 PM
5th Gear
 
Join Date: Jan 2011
Posts: 4,239
Jim, I think the computer folk call this switching logic "EITHER/OR" circuitry. Any ground will sustain CDI operation.

Tom Schmitz' revised wiring diagram shows how you can eliminate all safety switch diodes, but . . . you would have to bypass the starter circuit relay for the starter button to work (i.e., activate the starter relay).

Try connecting RED/BLACK and BLACK/YELLOW at the CDI (to eliminate diodes in the circuitry), and connecting YELLOW/RED to BLACK at the starter circuit relay (to bypass the starter circuit relay), if you want the "COMPLEAT" safety-switch free Generation 1 KLR650!

CAVEAT: Ain't tried this myself; not responsible for ANYTHING negative resulting from this wiring modification.
Damocles is offline  
post #3 of 10 Old 08-05-2013, 03:28 PM
Pretty in Pink, dunno why
 
Tom Schmitz's Avatar
 
Join Date: Feb 2009
Location: Redondo Beach
Posts: 7,450
Garage
We seem to have invented a new way to bypass the safety switches, haven't we?

The trouble is that it would seem to be far more work to do it this new way than to simply do it the old way. The added advantage of the old way is that a) it's reversible and b) you can simply carry the needed jumpers with you until you need them, then do the bypass.

T

Tom [email protected]

“Neither of the two people in the room paid any attention to the way I came in, although only one of them was dead.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte


Sting like a butterfly.
Tom Schmitz is offline  
 
post #4 of 10 Old 08-05-2013, 03:50 PM Thread Starter
2nd Gear
 
Join Date: May 2013
Location: Gainesboro, TN
Posts: 114
Comment

BUT - the OLD way is NOT thought provoking(sorta like most things now days - don't worry about it - go buy a NEW one!
Jim Sizemore is offline  
post #5 of 10 Old 08-05-2013, 03:57 PM Thread Starter
2nd Gear
 
Join Date: May 2013
Location: Gainesboro, TN
Posts: 114
Comment

BUT - the OLD way is NOT thought provoking(sorta like most things now days - don't worry about it - go buy a NEW one!

I'm gonna look and try to learn some more about it.(before I mod anything)

Jim

Every time I would go ask an old Navy chief a question, when I was an instructor in the CRYPTO school at Lackland,his answer was "E equals I times R, electrons flow from neg to pos(EVEN though he was NAVY!)and AGAINST the arrow in a diode and Xstr....and he was right!
Jim Sizemore is offline  
post #6 of 10 Old 08-05-2013, 04:08 PM Thread Starter
2nd Gear
 
Join Date: May 2013
Location: Gainesboro, TN
Posts: 114
Another comment

Isn't the starter ckt relay providing a ground rather than looking for one??

Jim again
Jim Sizemore is offline  
post #7 of 10 Old 08-05-2013, 04:14 PM
5th Gear
 
Join Date: Jan 2011
Posts: 4,239
Quote:
Originally Posted by Jim Sizemore View Post
BUT - the OLD way is NOT thought provoking(sorta like most things now days - don't worry about it - go buy a NEW one!

I'm gonna look and try to learn some more about it.(before I mod anything)

Jim

Every time I would go ask an old Navy chief a question, when I was an instructor in the CRYPTO school at Lackland,his answer was "E equals I times R, electrons flow from neg to pos(EVEN though he was NAVY!)and AGAINST the arrow in a diode and Xstr....and he was right!
He was correct, IMHO (A "crippie," eh? Hey, I worked for ASA (Army Security Agency), when there was an ASA; surely, you remember then?).

There was/is a concept in solid-state electronics of the migration of HOLES, that is, a "hole" being the ABSENCE of an electron, in the "conventional" direction of current flow (i.e., in the direction of the diode arrow. In other words, opposite to the true path of the electrons.

I digress. My regrets!
Damocles is offline  
post #8 of 10 Old 08-05-2013, 04:48 PM
5th Gear
 
Join Date: Jan 2011
Posts: 4,239
Quote:
Originally Posted by Jim Sizemore View Post
Isn't the starter ckt relay providing a ground rather than looking for one??

Jim again
No.

If you look at the wiring diagram in Chapter 17 of the Clymer manual (link provided previously), you'll see the starter circuit relay picks up ITS ground from either the neutral switch, or the clutch safety switch.

The starter button (ignition key ON) sends + 12VDC to the activation coil of the starter circuit relay, closing its contacts (provided a ground is present from either the clutch safety switch or the neutral switch) and simultaneously sending that 12 VDC to the control voltage contact of the starter relay, activating the starter relay and powering the starter motor.

Any questions?

FULL DISCLOSURE: That's just my current best effort at muddling through the wiring diagram; no guarantee of accuracy; corrections most welcome!

Last edited by Damocles; 08-05-2013 at 05:13 PM.
Damocles is offline  
post #9 of 10 Old 08-05-2013, 05:13 PM Thread Starter
2nd Gear
 
Join Date: May 2013
Location: Gainesboro, TN
Posts: 114
holes

Yeah I remember them trying to teach me about them. I think I'm still an infidel - even tho the theory makes sense....I think I learned enough atomic/electronic theory to properly confuse me!

Jim
Jim Sizemore is offline  
post #10 of 10 Old 08-05-2013, 05:26 PM Thread Starter
2nd Gear
 
Join Date: May 2013
Location: Gainesboro, TN
Posts: 114
Quote:
Originally Posted by Damocles View Post
No.

If you look at the wiring diagram in Chapter 17 of the Clymer manual (link provided previously), you'll see the starter circuit relay picks up ITS ground from either the neutral switch, or the clutch safety switch.
You're seeing the bl/red to the starter ckt relay as an input - I thought it was an output to the CDI thru the diode(I "assumed" it got it from somewhere else within it's cktry. I forgot it was just a relay - I think you are right. I quit for a while. My poor machine is hangin' in pieces! Will try to solve the ign problem with no 12v. coming back on the wire to the clutch sw. tomorrow. G-NITE

Jim
Jim Sizemore is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki KLR 650 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
CDI temp Jeepflambe 1987 to 2007 Wrenching & Mods 5 03-21-2013 09:28 PM
CDI Ignition box? txroller How To's & Tech Guides 1 07-14-2011 10:55 PM
CDI Ignition box? txroller Other KLR's - 250, 600, Tengai, C Models, KLX... 2 07-14-2011 01:44 PM
CDI extra wire Raven7777 1987 to 2007 Wrenching & Mods 1 12-19-2010 10:31 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome