grey wire ??

4 replies to this topic
  • cmore

Posted January 24, 2003 - 02:45 PM


I'm new to the site, & fourstrokes, always been two stroke. yz125 finally rode the wheel off. took big step up & always looking for improvements. what is this grey wire.?

  • MN_Kevin

Posted January 25, 2003 - 03:21 AM


Grey wire found ONLY on U.S. WR's.

Grey wire is input to ignition and cuts out spark or retards timing or something. Proved on a dyno (I think WR250 though) the results were nothing short of drastic.

>> REMOVE The grey wire.

Blue Wire is ignition input to lower rev limit/reduce spark in neutral. Guys have claimed removing it allows better spark for starting.

>> I HAVE done both to my 99 WR420 Bigbore

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  • tctrailrider

Posted January 25, 2003 - 03:51 AM


Try this site

  • cmore

Posted January 25, 2003 - 05:18 PM


ck your pm

  • tctrailrider

Posted January 26, 2003 - 04:34 AM


Woops, I messed up, try this


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