Rear turn signals out

[CrazyHorse]

I'm doing some work on the old bike and have cleaned all the plastic connectors with connection cleaner crc . Now my rear turn signals do not work no light at all no turn flash either. The fronts light up but do not flash for a turn. I do not have power to the rear plastic connectors either side that go to the rear signals. Any ideas where to look maybe a another connector up towards the front? Thanks Jim.

[GeorgeS]

Would be the Large connector, located under the passenger portion of the Seat, on the left side. There are about 13 wires going thru this connector.

The " B " black wire is the Ground for all the Rear Lights,

 

Open the Plug, and with ohm meter, read resistance to ground looking into the fwd side of connector, then reconnect it, and stick ohm meter probe into the back side of the rear half of the connector, and make sure you read Zero Ohms, ( Ground ) there.

 

This wire provides ground to All the Rear Light bulbs.

 

If you loost this ground thru this connector, all rear bulbs will be out.

 

A single black wire runs from each bulb holder, and at some point they all " SPLICE " into One black wire, which goes to the back section of the 13 pin plug.

 

Also, on the plug, tug on the black wire front and back of the connector, to make sure the wire does not pull out of the " crimp" to the Pins inside the connector.

 

If it pulls out, you will have to repair the plug, OR, Simply Bypass the ground wire around the Plug. This is what I would do. Its not easy to repair the pins in the plugs.

 

Hope this helps.

 

n7uy@comcast.net

[CrazyHorse]

I have a 1990 which seems to be different then earlier models. When you have the ignition on do the rear signals light up and stay lit like the fronts? It appears the rear are the 1156 bulb and the front is 1157.

Tracking down the problem it appears to be the flasher/hazard module. Mine appears to be combined instead of separate like earlier models I was reading about on this web site. I could not find any flasher or cancel unit on the sides of the fairings. I found it at least I think I did right in the middle behind the insturement panel. I heard it making a noise when I put the emergency flashers on the rears did flash (I did not have the flasher switch plugged in earlier) I also heard a shorting noise whenever I put the turn signals on come from this box but they would not work. I wonder when I sprayed the connection I shorted it out because the fluid could get into this unit. This is a picture of the unit.

[GeorgeS]

My bike is an 89, new in 93. My title reads 93, but date of mfg. is 89.

 

Check the Data plate under the clutch, for the year of mfg.

 

OK, on mine, the rear Ambers, are Only Turn sig flasher's. ( 1156 single filament bulbs ) No marker lights on the rear of bike.

 

The front, is two filament 1157 bulbs, marker lights, and flashers.

 

The photo you sent is the flasher unit.

 

When the Hazard SW is On, you get 4 way flashers

 

When the Hazard SW is OFF, it sends power to the part of the flasher that works the turn signals. ( If this wire circuit from haz sw to the flasher unit were bad, or OPEN, the turn signals would not work )

 

IF---- the Hazard switch, is sitting half way between Off and ON

then Nothing will work, 4 way, or the Turn Signals.

 

OK with that in mind, " From" the Hazard switch follow the Cable of 8 wires that go to it.

 

You will come to a Pull Apart Plug, You might have bad connections in this plug. ( should be located behind headlight assembly )

 

Also, inspect the wire bundle as you go and look for damage to the wires.

 

As to half way between Off and ON of the Hazard sw, I just went down to my 89 to prove this.

[CrazyHorse]

Mine was made in 11/89. I did notice with the hazard connector had alot of bluish corrosion in the connector. I sanded the male side down but no real way of doing the female side. I did spray crc on to both. I get a buzzing noise when I use either turn signal not sure what this means.

[GeorgeS]

This is a long shot, however it is possible for a bulb to be shorted out internally. Extremely rare though. ( one of the flasher bulbs that is.). You might try replaceing all 4 of the flasher bulbs, a long shot, but I would try it.

 

At the plug to the flasher unit, tug lightly on each of the wires going into the plug, one of them might pull out of the crimp on to the internall connecter. ( another rare occurence, bad or corroded wire in the crimp )

also, you can take a single " blade " type connector, ( same as on the flasher unit ) and feel the contact in the female side of the connector, make sure you feel resistance on each of them.

 

Also the black wire going to this plug, is ground, use ohm meter, make sure the wire actually is getting a good ground.

 

I would also, pull the plug for the cable going to the Haz Sw, and do resistance check across the contacts. make sure this switch is actually good.

 

However, its beginning to sound like your flasher unit might be bad. but eleiminate all else first, as these things are expensive.

 

Sombody on the web site may have a used one for sale from a bike being parted out.

[CrazyHorse]

I gotta admit I not the best with electrical I measured resistance not even sure I was doing right I used the black wire and tested every other wire all were infinite except one a brown wire next to the the black. How would I do this George?

[GeorgeS]

Do you have a service manual ??

 

If not download it, and print out page 7-1 and 7-2

 

Also, 8-40 and 8-42 ( this one shows all the Plugs in the system. )

 

Any chance , the plug going to the Flasher unit is disconnected ?

 

I would take apart and reinstall a couple times, the plug to flasher unit, AND the Haz Switch, AND the big 13 pin plug under the Pasenger seat

 

Also, follow the 4 wire bundle, from the Turn Sign Switch on left side, and follow it to the 4 wire plug, clean and reinstall this plug a couple times. ( located behind the headlight someplace )

[CrazyHorse]

Ok Ill do it. Did the flasher multiple time and the hazard connector also. I get the rears to work on hazard so Im thinking its the turn flasher thats gone out. Yea they aint cheap either. It worked before I sprayed it. I wonder if I powered it up while still wet and shorted it out. I did have one bulb that was sort of dim for a short time and flashed out of sequence but it seems nornmal now. Ill try replacing the bulbs also. Thanks for your help.