Tachometer hookup instructions


Technical information and Q&A applicable to all years and models of Goldwings
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dvcruz
Posts: 93
Joined: Sun Aug 15, 2010 1:49 am
Location: San Jose, Ca
Motorcycle: 1993 GL1500 Aspencade
1983 GL1100 Interstate

Tachometer hookup instructions

Postby dvcruz » Wed Nov 03, 2010 9:50 pm



Okay, let's say I was bored and decided to go adjust my pilot screws ('83 GL1100). I have a adjustment tool and understand the proceedure, but all I have to read the rpms is a old tachometer with a red-black-green colored cord hookup.
Would someone be so kind as to tell me how I could hook this up on my bike and be real specific of where the green wire would go (what color wires/location)? I understand I'll be looking at a 8-cyl meter on a 4-cyl bike, but since I'm just using it to measure rise\fall of the rpms that shouldn't be an issue, right?
Thanks in advance.
DVC


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WingAdmin
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Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
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Re: Tachometer hookup instructions

Postby WingAdmin » Wed Nov 03, 2010 10:45 pm

The red goes to +12V, the black goes to ground. The green goes to the coil PRIMARY - not the thick wire that goes to the spark plugs, you tap into the thin wire that is powering the primary side of the coil.

Being that there are two coils, but they fire twice per cycle, you'll probably end up reading 1/2 the engine speed if your tach is meant for a V8 engine.

dvcruz
Posts: 93
Joined: Sun Aug 15, 2010 1:49 am
Location: San Jose, Ca
Motorcycle: 1993 GL1500 Aspencade
1983 GL1100 Interstate

Re: Tachometer hookup instructions

Postby dvcruz » Thu Nov 04, 2010 2:07 am

Thanks WA, I'll give it a try tomorrow.
dvc
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