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beetle
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beetle

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Join date : 2013-10-01

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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Sat Jul 06, 2019 5:45 pm


tvboy, did you ever get your gear thingy working?

Mine started doing suspicious things. Like blanking out, seemingly over bumps. Then I started getting micro-hesitation while riding...coinciding with blanking of gear indicator.

I removed the tank and re-terminated the connection, removing the supplied wire tap and replacing it with a posi-tap.

While riding today, I got the same intermittent blank display and hesitation. I pulled the gear indicator harness connector, rendering it inoperable. No more hesitation...I think. It may have been psychosomatic, or the goat track the gummint calls 'roads' 'round here masking any issue. The fuel light chose to come one, so I headed home. I'm wondering whether it's doing funnies to the phase sensor signal.

I think a cruise on better pavement may be required.

Suspect


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tvboy
Grignapoco
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tvboy

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Age : 60

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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Sun Jul 07, 2019 12:40 am

Hi beetle,
How strange you ask because I've been wondering how you liked yours. I've not gotten around to doing it yet. Been focused on getting a proper cell phone holder (Ram mounts universal) and making a living. I don't like the idea of the engine cutting out. Not good. I've read many reviews on these units and not come across any complaints so don't know what to think. You say the bike doesn't cut out after you re-connected the phase wire? I plan to get my phase signal from the RH coil signal wire. (Not sure which wire color it is yet.) Reason is I would not have to remove the tank (trying to avoid that) ,the coil is easy to access, and the most important reason is if I have a faulty connection it would effect only the one coil so the bike would still run on one cylinder I hope. Not die completely. It would be relatively easy to do a field repair if it was a problem. Could you try relocating the phase pick-up to a coil and see if that solves your problem? Still like the red color? BTW, what is a Posi-tap?
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beetle
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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Sun Jul 07, 2019 9:36 am


I think I'll try the coil connection too. The right coil wire to connect to is the blue/green wire.

Posi-tap:

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And, yes, I'm happy with red.



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tvboy
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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Sun Jul 07, 2019 1:29 pm

So THAT's a Posi-Tap. Never seen that style before. The only reason I'll be using the RH coil is because my display will be on the right side of the dash housing so a natural cable path is down the right side.
Thanks for the wire color. I've been trying to get a high resolution schematic so I can read the wire colors. MG hasn't been too helpful so far.
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beetle
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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Sun Jul 07, 2019 2:12 pm


Here 'tis.

Download it from my drop box.

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tvboy
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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Mon Jul 08, 2019 5:02 am

beetle,

Thanks for the schematic! I can see clearly now! Looks like sky blue/green stripe.

I may be over thinking things but I just thought of something.
The cam phase sensor pulses should be equally spaced (that's good for the ECU and the gear indicator circuit) regardless of the actual  cam shaft speed but the coil pulses won't be equally spaced will they? The two coil pulses are not equally spaced when engine is running but we are using just one of them so it won't matter I guess. It should be OK? Tapping into just one coil signal will result in evenly spaced pulses.  I think I answered my own question. Thoughts?
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beetle
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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Mon Jul 08, 2019 10:10 am


The answer is "yes".


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beetle
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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Mon Jul 08, 2019 5:04 pm


Relocated RPM input wire to right coil. I had to relearn the gears again, but it appears to be working as it should. I'm still getting blank-out's when I hit a bump, so I'll check the connection to +12V, ground, and speed signal.




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tvboy
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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Tue Jul 09, 2019 1:18 am

It makes me wonder if the supplied clamp-on style connectors aren't very solid.
There are different brands and in this neck of the woods the best ones are made by Scotch.
The connectors are Scotchlok. Never heard any complaints about them.

Oh wait, you soldered directly onto the wheel speed wire and didn't use a connector. hmmmm.
What the hell? Just how big are the bumps down there? ha
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beetle
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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Tue Jul 09, 2019 6:41 am


I checked the soldered connections, snugged up the female pins in the connector, and tied the connector to the loom, to prevent it flopping about.

I probably won't get to test ride it again until the weekend.


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tvboy
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PostSubject: Re: Help with Gear Indicator Wiring   Help with Gear Indicator Wiring - Page 3 Icon_minitime1Wed Jul 10, 2019 10:30 am

Anxious to hear about it after your next ride.

At least we know a flakey speedo connection wouldn't cause your engine to falter.
It could cause the gear display to blank but you think the engine might be faulting while the display is blanking.

It just doesn't seem likely you have a bad connection. I'm kind of wondering about the display itself. hmm
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