What is this wire/connector for?

[videoarizona]

Found this connector while cleaning the electrical connectors on the left side of bike alongside the frame above and to the left of the fuel pump.

 

In looking over the schematic, I can see only one two wire connector with one red and one black wire...and that is for the condensor which is used with the voltage regulator.

 

However, the black side is a frame ground and the red wire has 12.6 volts to it.

 

So, any ideas? I simply do not see anything within range of the plug that is unplugged. I can't get to the regulator to see if the 2nd connected is connected to anything....

 

TIA, david

[bkuhr]

looks to me like it might be the actual fuel pump connector

[dingy]

I think that is for the condenser, assuming this is on your 89.

 

Bike will run fine without condenser, its function is to reduce static on radio & intercom system. It does nothing else that is critical to bike running.

 

Condenser is about 1 1/2" dia x 4" long. Black plastic shell.

 

Ebay link to one below.

 

http://www.ebay.com/itm/BNIB-NOS-NEW-Yamaha-Venture-XVZ1300-VMAX-Smoothing-Condensor-1NL-81965-01-A181-/251174393542?pt=UK_Motorcycle_Parts_13&hash=item3a7b2916c6&vxp=mtr

 

Gary

[videoarizona]

Dingy,

 

That is exactly the problem I am having...electrical noise on my intercom and CB.

So where is the condensor unit located? I can't find anything anywhere near the plug.

I'd appreciate any further guidance. I have the bike up on the center stand now....

 

Yes this is for the 89 Venture Royale.

 

Brian, checked the fuel pump...still running.

 

I think it's for the condensor as well....just can't find the sucker!!

 

david

[KIC]

My 89 has the same plug. Found it tucked up behind the frame. Guessing what ever it is it isn't needed. Guess when I have some time I will check for voltage and if it is hooked up to the key on or off.

[videoarizona]

Yep...looks like same plug.

 

Hmmm....wonder if I could find something that would work....can't seem to find it here in the US.

 

Thanks guys!

 

david

[videoarizona]

Oh.....mine was "hot" without the key. 12.6 volts to ground.

[dingy]

Oh.....mine was "hot" without the key. 12.6 volts to ground.

 

A condenser (aka capacitor) does not pass DC current, so there is no drain on the battery. It 'absorbs' spikes and ripples that are present on the 12v power circuit.

 

Should be located on left side, behind cylinder head & in front of fuel tank. I think it is mounted to the vertical frame rail.

 

Here is another link to one on ebay with a better picture of it.

 

http://www.ebay.com/itm/1986-Yamaha-Venture-Royale-XVZ1300-Electrical-Part-Unknown-/121219317399?pt=Motorcycles_Parts_Accessories&hash=item1c393bfe97&vxp=mtr

 

Gary

Edited June 18, 2014 by dingy

[bongobobny]

Possible reason for them being disconnected. When they short out they make a bunch of smoke and blow fuses!! Probably the death for both of your capacitors, and as stated unplugging fixes that...

[videoarizona]

Thanks, Gary. Will crawl around the left side again and see if that little bugger is around.

 

If not...will think about a replacement. But I am concerned about the 12 volts on the red side....

[frankd]

The plug is empty on my 89 also. I was chasing the intercom noise on mine several years ago when I found the connecter. I tried connecting different capacitors, and it had no effect on the noise, which is probably what Yamaha found out. There is a filter network for the radio mounted in the left pocket of the fairing, just in front of the radio chassis. It contains filters (actually a much better configuration, an L-C filter that consists of an inductor and capacitor). I beefed this filter up by adding capacitance, but it had no effect. This filter is made up of 2 different filter networks, one for the radio memory circuit and one for the actual radio. To eliminate DC line noise from the radio, I temporarily connected the radio to an external power supply, and I still had the noise when I revved up the motor even though the radio was being powered by a filtered, regulated DC supply. I found that on mine the noise was coming into the intercom via the intercom mike cables, and I found several things that reduced the noise significantly. I added grounds, cleaned connectors and opened up the radio chassis and tightened all the ground screws that hold the PC boards down. I also found that the noise which sounded just like ignition noise, was actually voltage regulator noise. That's why it was quiet when the bike was idling, but when you revved up the motor it got loud.

 

Frank

[videoarizona]

Thanks, Frank.

 

In looking over the supplemental schematic, I found the condenser is tied to 12 volts...so I guess it was a "smoothing" device. Probably just took the ripples out of the charging system.

 

So if I understand you, I need to pop the seat and start tracing all the intercom wires, checking grounds and probably adding new ones to act as shielding. I could probably wrap the intercom wires as well...want to think on that. Had similar issues at a USAF radio station that was very close to a pulse radar system. Took some work to build a Faraday cage around the entire production areas...but was successful.

 

I'll also look into taking the radio out and cleaning it up as well....grounds. Always the bane of a good signal!

 

Thanks again!

[GeorgeS]

this might be for some device that only the Calif. bikes had installed. ??? as part of the " emissions control " systems.

 

I know the calif bikes did have some device's that all others did not have installed.

[videoarizona]

Update:

 

Took a good part of the bike apart. Didn't find any condenser, so it either was not installed by Mom Yamaha or a PO took it off. Along the way, took the audio pieces out. Everything looked brand new. No junk on any connectors, all cables were tight and clean. Radio looked brand new as well. Followed the antenna feed and intercom feeds...everything good. Put back together and noise still there.

 

Going to live with it for a while and ride this weekend. After that...may try again. Thinking about a new antenna anyway! That might help.

 

thanks...all....I do appreciate this forum and it's people!

david

[frankd]

Now that I've thought about it, something else that I found was---there is a DIN connector underneath the passenger seat (you have to remove the seat to find it). Mine was not quite all the way together. I unplugged it and plugged it back in several times, and then made sure that it was in all the way.

[videoarizona]

Frank,

 

Noise is still there, but I haven't popped the seat yet to finish checking all the connections. BUT, in the ride this weekend, I was able to check out the source of the noise. It's not regulator...it's there all the time on the intercom and CB, regardless of electrical load. Only varies with RPM. So it's probably a bad plug wire or one of the coils. I'm still thinking of a bad ground, but sure haven't found one yet...

 

david

[frankd]

Dave,

 

Unplug the cb connector from the radio chassis (2nd plug from front) and see if the noise goes away. Another VentureRider had the cable between the CB and the radio chassis damaged and ignition noise was getting into the radio. Then unplug the intercom cables (the back 2 connectors) and see if one of these is your problem. Remember that when you unplug the front intercom cable, you will have to check the noise in the rear intercom connector.

 

Frank