86 GL1200A Turn Signal Woe's

1392 Views 9 Replies 4 Participants Last post by russ_voo, Sep 5, 2009

russ_voo

Discussion Starter · Sep 5, 2009

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My turn signals won't work. I just replaced the left handle switch with a new one (took me 3 days to find it). 4-ways work fine. Swapped the turn signal and 4-way flashers, didn't help. Ok, I've read all of the posts on here about the 86 GL1200 Turn signal problems. I have the schematics (I'm a fork lift tech, so I can read them just fine). I have most of the top of the bike apart. I would like to take the canceling unit out of the circuit because I believe that is the problem. Any suggestions? I've been at it since I got home tonight! I read in one of the posts that grounding out the blue/red wire would bypass the cancelling unit. I tried it and that didn't work either (or I grounded out the wrong wire).

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Bike...and Dennis

· #2 · Sep 5, 2009

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Sorry, don't know much about this, Russ.

My only thought is...are those left switch housings the same for all years and if not, could you have been given the wrong year?

Usually, turn signal woes are cured by cleaning that switch.

Thought I'd post this twice, since you double posted.

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russ_voo

Discussion Starter · #3 · Sep 5, 2009

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Sorry about the double-posting. That was my mess-up. I've never used a forum before. The switch is correct, I checked it. All wire color codes are the same. I think I'm down to hooking Pink to B+ and/or Light Green/White to B-. I'm leaning toward the B- hookup. The '86 schematic does not indicate the exact coil release on the cancel circuit, but looking at the previous years schematics I think it's Light Green/White. I don't really care if the cancel works or not right now, but I DO care if the signals work. LOL

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Bike...and Dennis

· #4 · Sep 5, 2009

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Hang in there. Someone that knows a ton about this will surely be on soon. I personally don't think losing the self-cancel feature will gain anything.

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russ_voo

Discussion Starter · #5 · Sep 5, 2009

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This is an afterthought, but does the speedometer have anything to do with the turn signals? i.e. can I test the turn signals with the bike stationary on the kickstand? I am assuming the turn signals will work in an stationary position, but you know what they say about that! My speedometer is not even functioning right now. I've tested and diagnosed it down to the gearing in the front wheel, but haven't replaced it yet.

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Bike...and Dennis

· #6 · Sep 5, 2009

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Auto cancel uses time/distance equation I think, but that shouldn't affect stationary performance. My signals work while sitting still.

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DaveO430

· #7 · Sep 5, 2009

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Any good reason to post this twice in 35 minutes?

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Bike...and Dennis

· #8 · Sep 5, 2009

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DaveO430 wrote:

Any good reason to post this twice in 35 minutes?

No reason...do you know how to fix it?

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neoracer

· #9 · Sep 5, 2009

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just a thought but have you checked the turn signal flasher by switching the hazard and the turn signal to make sure the flasher is working

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russ_voo

Discussion Starter · #10 · Sep 5, 2009

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Well, I know what the problem is, but I don't know what is causing it. The turn signal relay has 3 wires. One hot, one out (gray) and one from the cancel unit/position relay (blue/brown on the '86 model). B- on this last wire will cause the turn relay to "flash". B+ indicates a "cancel" signal. Mine is always B+, so the turn relay never flashes. What I still don't know is which unit (position relay or cancel unit) is supposed to generate the B+ signal to "cancel" the turn signal. If someone could tell me so I know which part to replace I would appreciate it.

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