1988 tach issues


Information and questions on GL1500 Goldwings (1988-2000)
  • Sponsored Links
Firea100
Posts: 73
Joined: Wed Jul 31, 2013 1:53 pm
Location: East China, Michigan
Motorcycle: 1998 Honda Valkyrie
1989 Honda goldwing trike

1988 tach issues

Postby Firea100 » Wed Aug 19, 2015 7:30 am



Good morning to all on the site. My problem is with my 1988 Aspencade. It is triked. The tach exibits the same symptoms as others have reported, tach shows twice (aprox) the expected rpms. My question is: Do all of the 1988-2000 interchange with the '88? I know the "white faced" one wouldn't look right with a dark speedometer. But other than that, can I use any other year tach? I've seen some info about 2-wire and 3-wire tachs but still don't know what that's about. Any help would be appreciated.
Thank You,
Larry in East China Mi.



User avatar
virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1988 tach issues

Postby virgilmobile » Wed Aug 19, 2015 9:27 am

I can only speak about the difference...
In all the schematics i look at from 88 on up,there are 2 common things..
The tach has a ground and a yellow/blue wire from the ignition module...
I make the assumption only that all the tach assemblies contains the electronics to convert the signal to a display reading...
Some schematics do show a switched Black/brown wire feeding the tach (the third wire)...It's possible that there is a production change in the instrument cluster that provides power to the tach on that wire rather that a separate circuit board trace.
I suspect that if you have a 88/89 model,you may be stuck getting one for it...The 90 and up do have some changes but only someone who has visited this before can tell for certain if it's plug and play.

Another consideration is that the tach itself is OK and the problem is the circuit that operates it...There are filter capacitors there that may be suspect...They do have a life expectancy.

Firea100
Posts: 73
Joined: Wed Jul 31, 2013 1:53 pm
Location: East China, Michigan
Motorcycle: 1998 Honda Valkyrie
1989 Honda goldwing trike

Re: 1988 tach issues

Postby Firea100 » Wed Aug 19, 2015 9:43 am

Virgilmobile,
Thank you for the response. SO should I take the cluster apart and look for a leaking capacitor? I'm not a skilled electronics tech but could probably manage to remove and replace a capacitor if I had to.
Thanks,
Larry in East China Mi.

User avatar
virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1988 tach issues

Postby virgilmobile » Wed Aug 19, 2015 11:37 am

We'll let me put it this way.Its already broke any you plan to replace it...why not see if it can be fixed.
You might try to locate another one in the mean time..just in case.

User avatar
virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1988 tach issues

Postby virgilmobile » Wed Aug 19, 2015 2:54 pm

Keep in mind,I do not have one in my hand to guide you.Im relying on my technical ability and schematics.
Keep me posted.




Return to “GL1500 Information & Questions”




Who is online

Users browsing this forum: No registered users and 2 guests