trailtech vapor RPM pickup

3 replies to this topic
  • crmc33

Posted September 25, 2007 - 05:12 AM


Im trying to get a Vapor computer to work on my 650L based road racer and was wondering how most people are wiring up the rev counter lead?
I have tried both wrapping the lead round the HT lead and hardwiring the pickup on to the black/yellow supply to the coil from the CDI.

Both give 'off the scale' readings no matter what pulse per rev number I use.:thumbsup: I think I may have a duff CDI. I will put some shielding onto the pick-up lead before ordering a new CDI but am still interested in what you guys have got to work reliably.

  • Jawmail

Posted September 25, 2007 - 09:28 AM


I wrapped the pickup wire around the plug wire 10 times like they show in the directions. Put some black electrical tape on it and was done. If I remember correctly I had to go in and change something in on of the menus because the count was 1/2 of what it should have been.

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  • husky123

Posted September 25, 2007 - 10:07 AM


Don't forget to split the wires and ground one to the frame or coil too. If you wrapped both wires that could be the problem.

  • crmc33

Posted September 25, 2007 - 02:03 PM


Sounds like Ive done everything correctly. Ive tried all different PPR settings and wiring (earthing the black part of the wire). I think my old CDI may be double sparking or something - could explain my recent misfires!!!

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