1984 gl1200A digital speedometer


Information and questions on GL1200 Goldwings (1984-1987)
Post Reply
Steve S.
Posts: 2
Joined: Mon Dec 09, 2019 9:58 pm
Location: Canada
Motorcycle: 1984 gl1200A

1984 gl1200A digital speedometer

Post by Steve S. »



I am using my (Canadian?) gl1220A with digital speedometer in the US. Every time I ride I have to push the button to change from kph to mph. Anyone know if I can change the default to mph?



froche
Posts: 280
Joined: Wed Mar 12, 2014 1:56 pm
Location: Vista, ca
Motorcycle: 1985 Goldwing Aspencade (GL1200A)
2002 GL1800

Former bikes;
2000 R1100RT
2005 Suzuki Bandit
1979 Yamaha XS1100
1978 Yamaha XS1100 Special
1990 Yamaha XV250
1980 Yamaha XV750
1979 Honda CB750
1968 Triumph Bonneville T120
1973 Honda CB450
1968 Harley Davidson Sportster
1974 Honda CB750
1968 Honda CL72

Re: 1984 gl1200A digital speedometer

Post by froche »

The trip control unit uses button #17 to change this, it is a momentary push button. I believe this is a brown / black wire.
You could use a VOM and see if it is a +12 volt or - 12 volts (or another voltage) and once found you could use this to supply a momentary (1/2 second) + voltage to the Black / Brown wire. if it is +12 volts then you can use the diagram found here https://www.the12volt.com/relays/relaydiagram20.html. If it is different well then ask again.

User avatar
oldishwinger
Posts: 414
Joined: Sun Jul 14, 2013 11:26 pm
Location: New Zealand
Motorcycle: 1986 GL1200 Aspencade

Re: 1984 gl1200A digital speedometer

Post by oldishwinger »

these is a workaround I saw some years ago, where a very clever person figured it out. However, its involved quite a major change in electrics by someone who knew what he was doing. to my way of thinking, its way easier just to push the button

froche
Posts: 280
Joined: Wed Mar 12, 2014 1:56 pm
Location: Vista, ca
Motorcycle: 1985 Goldwing Aspencade (GL1200A)
2002 GL1800

Former bikes;
2000 R1100RT
2005 Suzuki Bandit
1979 Yamaha XS1100
1978 Yamaha XS1100 Special
1990 Yamaha XV250
1980 Yamaha XV750
1979 Honda CB750
1968 Triumph Bonneville T120
1973 Honda CB450
1968 Harley Davidson Sportster
1974 Honda CB750
1968 Honda CL72

Re: 1984 gl1200A digital speedometer

Post by froche »

On ebay from the UK there are chips that are used to convert from kph to mph but no idea if they ewill work on motorcycles.
Try this and see what you think
https://www.ebay.co.uk/itm/400060708234 ... %7C294:200

User avatar
Swanson69
Posts: 2
Joined: Mon Oct 22, 2018 12:30 pm
Location: Thuringia, Germany
Motorcycle: 1984 GL1200 with EML GT3
1985 GL1200 Aspencade
1987 GL1200 Aspencade

Re: 1984 gl1200A digital speedometer

Post by Swanson69 »

hello all
I found that in the German Goldwing forum. There it is HowTo about having to switch from Mph to Km/h after starting.
Maybe it will also help the other way round

https://www.goldwing-forum.de/forum/top ... 0kilometer&

triple
triple

---------------------------------------------------------------------
:D does not work, does not exist :D

greetings from germany

Steve S.
Posts: 2
Joined: Mon Dec 09, 2019 9:58 pm
Location: Canada
Motorcycle: 1984 gl1200A

Re: 1984 gl1200A digital speedometer

Post by Steve S. »

Thank you for the responses people!
There was some interesting information and references, but no simple, miracle answers.
I decided to try some basic, generic tries at changing the default by holding buttons while turning the key off/on/etc. and found by accident that if I kept the kph/mph button depressed by wedging the tapered end of a zip-tie alongside it, the display stays on mph all the time.
I am happy after trying it on a ride here in Florida to-day.

User avatar
Rambozo
Posts: 471
Joined: Sun Apr 01, 2018 8:36 pm
Location: Disneyland
Motorcycle: 1992 GL1500 Aspencade

Re: 1984 gl1200A digital speedometer

Post by Rambozo »

Sometimes low-tech is the answer.

User avatar
boonny
Posts: 34
Joined: Fri Nov 12, 2010 12:14 am
Location: Canada
Motorcycle: 1984 Aspencade

Re: 1984 gl1200A digital speedometer

Post by boonny »

I don't think you will want to do this on the road.You have to take the speedo apart, on the back of circuit there is a jumper that needs to be moved and you will have mph instead of kph



User avatar
WingAdmin
Site Admin
Posts: 21294
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (sold)
1998 XV250 Virago (sold)
2012 Suzuki Burgman 400 (wife's!)
2007 Aspen Sentry Trailer

Re: 1984 gl1200A digital speedometer

Post by WingAdmin »

Not actually a jumper - you have to cut a board trace, and then solder across the other contacts.

Fry
Posts: 3
Joined: Wed Sep 23, 2020 10:12 am
Location: Denmark
Motorcycle: 1986 GL1200 Aspencade

Re: 1984 gl1200A digital speedometer

Post by Fry »

Hi, please see my post, even though you want kmh to mph I think my fix will work.
viewtopic.php?f=5&t=61419

User avatar
Rambozo
Posts: 471
Joined: Sun Apr 01, 2018 8:36 pm
Location: Disneyland
Motorcycle: 1992 GL1500 Aspencade

Re: 1984 gl1200A digital speedometer

Post by Rambozo »

Another option may be to use an RC circuit to momentarily press the button at power up. I use that technique on my BMW to disable the traction control when I start the car. A 2.2k resistor in series with a 470uf cap paralleled with the switch contacts did the trick for me.



Post Reply