Tracking down the evil electrical gremlins!


Information and questions on GL1200 Goldwings (1984-1987)
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TheRepoGuy
Posts: 66
Joined: Mon May 20, 2019 9:44 pm
Location: Grayson, Georgia
Motorcycle: 1985 GL1200I Interstate
1985 GL1200A Aspencade

Tracking down the evil electrical gremlins!

Post by TheRepoGuy »



Evening Folks! Going to shoot from the hip on this one!

FINALLY getting a multimeter that works hopefully tomorrow; apparently with the power wire going directly to the fuse block I may have or did bypass whatever is providing power to the key switch which in theory SHOULD ignite the coils and get my old girl to breathe some fire again! Cleaned and removed the carbs tonight which I discovered one of the nice and expensive diaphragms inside the carbs was toast so while I wait a few weeks for that to show up in the mail (unless someone here has one for sale!) I figure I’d chase down the electrical issue.

The question is - Where to start ha! I know I’ve got power to the key switch and the start switch (bike cranks) but there’s no spark at all to the coils. I cleaned the ground off that goes from the battery to the frame which is in good shape, ordered a new rectifier just in case mine is shot and the only other thing I can think of replacing is the coils with the Dodge Neon Modification so that’s on my list.

Can anyone tell me what or drop a diagram showing a schematic drawing of the ignition system so I can start tracing some wires?
Nate



DaveO430
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Motorcycle: 2010 GL1800
2004 Suzuki DR200

Re: Tracking down the evil electrical gremlins!

Post by DaveO430 »

It appears I was wrong about the ignition not being fused.
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TheRepoGuy
Posts: 66
Joined: Mon May 20, 2019 9:44 pm
Location: Grayson, Georgia
Motorcycle: 1985 GL1200I Interstate
1985 GL1200A Aspencade

Re: Tracking down the evil electrical gremlins!

Post by TheRepoGuy »

DaveO430 wrote:
Mon May 27, 2019 5:59 am
It appears I was wrong about the ignition not being fused.
Thanks Dave!
Hopefully that’s the same manual I’ve got; but it appears I need to get a hold of page 16. When I turn the key on the fuel pump does not actuate; just realized that this morning after spending half the night watching YouTube videos on some of these. Pump is aftermarket so that makes me wonder if it’s toast out of the box 🙄

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DenverWinger
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Re: Tracking down the evil electrical gremlins!

Post by DenverWinger »

Think the fuel pump has to see some ignition activity before it comes on... In the lower left of the diagram note the line "to fuel pump relay".
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark

DaveO430
Posts: 1201
Joined: Fri Jan 02, 2015 7:28 pm
Location: Amity. Ar
Motorcycle: 2010 GL1800
2004 Suzuki DR200

Re: Tracking down the evil electrical gremlins!

Post by DaveO430 »

TheRepoGuy wrote:
Mon May 27, 2019 7:02 am
DaveO430 wrote:
Mon May 27, 2019 5:59 am
It appears I was wrong about the ignition not being fused.
Thanks Dave!
Hopefully that’s the same manual I’ve got; but it appears I need to get a hold of page 16. When I turn the key on the fuel pump does not actuate; just realized that this morning after spending half the night watching YouTube videos on some of these. Pump is aftermarket so that makes me wonder if it’s toast out of the box 🙄
It won't actuate until it sees an ignition signal.

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TheRepoGuy
Posts: 66
Joined: Mon May 20, 2019 9:44 pm
Location: Grayson, Georgia
Motorcycle: 1985 GL1200I Interstate
1985 GL1200A Aspencade

Re: Tracking down the evil electrical gremlins!

Post by TheRepoGuy »

FINALLY got the meter today! Tested both coils across the terminals and came up with both reading about 03.2ohms so I THINK these coils are kosher -

Tested the continuity on the kill switch and that was zeros across the board. Fuses all checked out okay so I’m still at that “stumped” level of bliss for the moment. I’ve got a new rectifier coming in since it had a bunch of bad connections/frayed wires going into the unit itself so maybe that will help. Going to do the Neon coil modification tomorrow hopefully as long as it gets delivered!



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