Kawasaki Concours Forum

The C-14, aka Kawasaki Concours-14, the new one :) => Accessories and modifications - C14/GTR 1400 => Topic started by: seismo on November 11, 2020, 09:55:57 PM

Title: Rostra cruise issue
Post by: seismo on November 11, 2020, 09:55:57 PM
This is driving me nuts.  I installed a Rostra cruise control on my 2009 C-14 following the wiring diagram made by Fred Harmon and available on the Concours Owners Group forum.  I have the Rostra 250-3592 panel-mount switch, with Engaged light.  I installed relays for the Engaged light and for the negative brake sense line.  The unit works, but....    If I leave the unit turned on, it stays on when I start the bike, but will not engage until I turn the unit off and then back on.  This isn't a big deal, but....    When I first engage the unit, it will disengage with the brake, but it won't re-engage unless I turn the unit off and then back on.  This situation lasts for a few minutes, and then the problem disappears and everything works.  I have duplicated this behavior three times.  I have checked the functionality of the control switch following the instructions in the manual, and all of the voltages on the servo side of the 4-pin connector check out.  I cannot get the unit to go into Diagnostic Mode; the LED light remains lit.  I've read that the NSS wire needs to be disconnected for the Diagnostic Mode to work, but I haven't tried that yet because I'd have to cut a wire.   My main ground and brake-sense grounds are solid.  All of my wire taps and splices are hard-wired solder joints covered by electrical tape or heat-shring tubing.  Any suggestions would be greatly appreciated.
Title: Re: Rostra cruise issue
Post by: connie_rider on November 12, 2020, 07:14:41 AM
That's a question that is waaaay above my pay grade.
Being an electrical idiot (and proud of it) I can only guess that it might be a relay that is sticking?
I suggest you contact Fred.

Ride safe, Ted
Title: Re: Rostra cruise issue
Post by: BruceR on November 12, 2020, 09:04:51 AM
Brian Felice would be a good resource as well.  Search BDF on this forum.  Same user name on Concours.org.
Title: Re: Rostra cruise issue
Post by: maxtog on November 12, 2020, 03:24:11 PM
Yep, Brian will surely respond once he sees the thread.
Title: Re: Rostra cruise issue
Post by: seismo on November 12, 2020, 05:17:38 PM
That's a question that is waaaay above my pay grade.
Being an electrical idiot (and proud of it) I can only guess that it might be a relay that is sticking?
I suggest you contact Fred.

Ride safe, Ted
Thanks.  I thought about that myself, and will try swapping out the relay.
Title: Re: Rostra cruise issue
Post by: seismo on November 12, 2020, 05:18:42 PM
Brian Felice would be a good resource as well.  Search BDF on this forum.  Same user name on Concours.org.
I was hoping he'd see my post and respond.  If he doesn't, I'll send him a PM.
Title: Re: Rostra cruise issue
Post by: B.D.F. on November 14, 2020, 02:33:51 PM
I do not have Fred's schematic but I may be able to help anyway. Shoot me an e-mail, my address is under my avatar, top left of the screen. Be sure to use e-mail as I may not see a PM.


I was hoping he'd see my post and respond.  If he doesn't, I'll send him a PM.