'83 Aspencade Tach reads zero


Information and questions on GL1100 Goldwings (1980-1983)
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dakotanator
Posts: 12
Joined: Sun Jul 20, 2014 10:07 am
Location: Columbia Falls, Montana
Motorcycle: 1983 GL1100A Aspencade

'83 Aspencade Tach reads zero

Post by dakotanator » Mon Jul 16, 2018 5:05 pm



1983 Aspencade. Bought it 4 yrs ago. Collected necessary parts. Started fixing it up 1st of June/18. Did just about everything to this thing maintenance-wise. Fired it up. Tach reads zero. I tried to find this subject in the forums, no luck. All "tach problems" are cable/analog. Manual is useless in this case. Not covered in manual.

Anyone ever have an electronic tach read zero........then find a fix..?

Could use info. By the way.....THANK YOU to everyone on these forums. Everything I did to this bike to restore it, I got the info from THIS SITE. Everyone's experiences and information proved to be PRICELESS. I am NOT a mechanic, but was able to do everything myself (mostly because of budget). Tires, brakes, calipers, wheel bearings, timing belts, lights, LED's, front/rear master cyl. rebuilds, patching ABS on bags.

Just NEED HELP WITH THE TACH..!!!! hahahaha



DaveO430
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Re: '83 Aspencade Tach reads zero

Post by DaveO430 » Mon Jul 16, 2018 7:05 pm

It appears there are signals from both coils going to the instrument panel, a yellow/blue & a yellow/green wire.(I have such a hard time following those lines on those spaghetti wiring diagrams I could be wrong) You might check those for continuity to the yellow and blue wires at the coils. Other than that it's probably something inside the instrument panel.

dakotanator
Posts: 12
Joined: Sun Jul 20, 2014 10:07 am
Location: Columbia Falls, Montana
Motorcycle: 1983 GL1100A Aspencade

Re: '83 Aspencade Tach reads zero

Post by dakotanator » Mon Jul 16, 2018 8:54 pm

Thanks DaveO430.......I'll check them.

But HEY.......I got the BRAKE LIGHTS WORKING..!! haha

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WingAdmin
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1982 GL1100A Aspencade (sold)
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Re: '83 Aspencade Tach reads zero

Post by WingAdmin » Wed Jul 18, 2018 9:07 am

DaveO has it right. There are two wires, Yellow/Blue and Yellow/Green going into the meter that are connected to the coil primaries. They supply pulses to the meter, which are counted/timed by the meter to generate the RPM. Check that you are seeing pulses there, and have connectivity from each wire to one of the coil primaries. If you have pulses there when the engine is running, the problem is likely going to be in the tach meter itself.

dakotanator
Posts: 12
Joined: Sun Jul 20, 2014 10:07 am
Location: Columbia Falls, Montana
Motorcycle: 1983 GL1100A Aspencade

Re: '83 Aspencade Tach reads zero

Post by dakotanator » Wed Jul 18, 2018 9:47 am

Thank you very much for the info. I will check it. I am SOOO hoping it's a bad connection and not the meter itself.

The LCD bars on the screen don't come on, but when I push the "Digital" button, the LCD at the bottom (numbers) reads zero.

I will definitely "dig into it".

robert78.5
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Location: Ste Rose du lac Manitoba
Motorcycle: 1983 Aspencade GL1100A

Re: '83 Aspencade Tach reads zero

Post by robert78.5 » Wed Jul 25, 2018 12:44 pm

I had the same thing happen, turns out the green ground wire on front coil mount bolt was loose. I cleaned surface and retightened bolt and tach worked again.

dakotanator
Posts: 12
Joined: Sun Jul 20, 2014 10:07 am
Location: Columbia Falls, Montana
Motorcycle: 1983 GL1100A Aspencade

Re: '83 Aspencade Tach reads zero

Post by dakotanator » Wed Jul 25, 2018 3:30 pm

AWESOME..!! I will definitely do that and hope for the best..! Thank you very much for the info.



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