81 850 g

[ron bayless]

I picked it up today.The previous owner had disconnected things,,trying to find out why the bike didnt start.My phone is dead, and dont have a manual.i will post pictures tomorrow.On the right side he disconnected wires going down from the handlebar switch.He exposed 1 orange white,1 orange,i green with yellow.I dont know why.I will reconnect 1 orange white to the cut orange white, and the other orange white to the orange.I haven had time to look on the schematic yet.Also he had the black lead on the solenoid so loose you could easily move it.He didnt even have a wire on the other terminal.He also had 2 black boxex dangling down from under the left sidecover.I dont know what those might be yet.I never looked in there on my other gs bike.One looks like it might be the igniter.I hope he didnt fry up a lot of things.

[rustybronco]

Go on bikecliff's website and download the shop manual for it. If not you're just spinning your wheels.

[Steve]

The orange/white wires are power to and from the kill switch. One of them should probably have a red sleeve over it, that will be the 'hot' wire from the battery. The other one will go to the coils and ignitor.

The green/yellow wire goes from the starter button, through the "safety" switch at the clutch lever, then down to the starter solenoid.

Items under the left side cover generally include the ignitor, the fusebox and the starter solenoid.

Both large wires on the solenoid are usually black. One will go to the battery + terminal, the other will go to the starter.

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[ron bayless]

Thanks Steve.Whole different bunch of wires and colors from the last yamaha I gave up on.

[ron bayless]

Go on bikecliff's website and download the shop manual for it. If not you're just spinning your wheels.

Thanks rb. I will check it out

[ron bayless]

Steve, from the handlebar switch it has a solid orange and an orange white.Coming from the bike is 2 orange white.I suspect hook it up one way, see if the ignition system works, if not switch the wires.It would be real hard to go through the harness and trace it down to either the solenoid or igniter.

[Steve]

Steve, from the handlebar switch it has a solid orange and an orange white.Coming from the bike is 2 orange white.I suspect hook it up one way, see if the ignition system works, if not switch the wires.It would be real hard to go through the harness and trace it down to either the solenoid or igniter.

You have a test light or a voltmeter?

One of those orange/white wires will be 'live' when the key is turned on, the other will not.

To determine which wire to connect to on the switch side of the connector, use a jumper wire from the battery + terminal, connect it to one of the switch-side wires. Move the Engine Stop switch to OFF. Press the starter button. If the starter engages, connect your 'live' wire to the other orange/white wire. If the starter does NOT engage, move the Engine Stop switch to RUN, press the starter button again. If it engages this time, you have the correct wire.

Click HERE to get a good wiring diagram from BassCliff's site. It's for an '80, but it's virtually the same as your bike.

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[ron bayless]

some picturesIMG_20130912_161459.jpg (46.2 KB)

[ron bayless]

one more IMG_20130912_161506.jpg (39.7 KB)

[ron bayless]

last one.And i do follow you steve, on the orange wire checking out.I work nights, still tired.

IMG_20130912_161516.jpg (43.4 KB)

[ron bayless]

one orange,one brown,one gray,one red.orange and red look to be 14 ga and brown and grey are 16 ga.my connector is crumbling away.The key i got wont work, the previous owner guy says thats the key.locksmith says no it isnt, it is a yamaha key.guy lives to far to go get one, so took the ign switch out, thats when i found the destroyed connector.I have the male and female connector and pins plus the tool from vintage connections to replace it.I have never done that before.So I have no key,no switch cause the locksmith closed and wont be back till monday.Can I hotwire it using the wires I wrote here.I would at least like to hear it turn over and see if the other wires i reconnected are right.i have seen toggles in place instead of keyed ign before, I want to do that temporarily.It looks like the orange would be to the ignitor, the red to the solenoid, the gray and brown i dont know.Even if i made the connector I can only do 1 half because the other half is locked up in a locksmith shop.Any input appreciated.I know I can go across the solenoid terminals and make the engine turn over, but i wanted to try starting it.it last ran in march 2013.

[almarconi]

Order a replacement ignition off ebay. In the meantime, get a wiring diagram and label the wires so you can see what is going on. While you are labeling you can also clean the connectors and see if any need to be replaced. I can see from the pics that there are pods on the bike, I'm sure that is going to be real fun to tune

[ron bayless]

I already am getting hopefully the ignition switch sorted out by the locksmith guy,if not will buy another ignition.Some of these connectors have had it.They were marlex material from what i read and are much better if replaced with new materials.I guess i dont know what you mean by difficult tuning with pods.i much prefer them to the cumbersome stock airbox. You have to have a guage, make the adjustments.Just like always.

[almarconi]

I guess i dont know what you mean by difficult tuning with pods.i much prefer them to the cumbersome stock airbox. You have to have a guage, make the adjustments.Just like always.

You will need to make far more adjustments on a bike with pods than with a stock airbox. If a jet kit is available for your bike use it, if not you will find it challenging to get the bike running well.

[Steve]

one orange,one brown,one gray,one red.orange and red look to be 14 ga and brown and grey are 16 ga.my connector is crumbling away. ... Can I hotwire it using the wires I wrote here. ... It looks like the orange would be to the ignitor, the red to the solenoid, the gray and brown i dont know.

If you only want to fire it up (and not take it on the road), all you need to do is to connect the red and orange wires.

The red wire is the hot wire from the battery (via the MAIN fuse), the orange wire goes back to feed the other fuses in the fuse box.

The gray wire is fed by the LIGHTS fuse, the brown wire goes straight to the tail light.
The tail light is separated from the other lights so it can be illuminated by itself when the key is in the PARK position. Normally, the brown wire is fed by the gray wire when the key is in RUN, which also connects the red and orange wires to provide power to the whole bike. In PARK, the brown wire is connected to the red wire, providing power only to the tail light, at least until the battery goes dead in a half hour or so.

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