Throttle housing switch

[Dom]

Having got my new XS650B home I'm setting about a tidy up and addressing a few issues, one of these is the missing knob on the kill switch. I have a spare complete unit so I thought it would be an easy swap but when I took the old one off the red/white and the brown wires aren't present at either end so must have been cut back or completely removed. If I fit the new unit where do these two wires connect in the headlight bowl?

I've got a Haynes manual and the Yamaha workshop manual but I don't understand the wiring diagrams.

 

[Wingedwheel]

Is that a stock unit? The stock XS650B had internal wires but to answer your question, yes they would need to connect in the headlight bucket. Check the tech section for the correct hookup inside the bucket.

 

[Dom]

Is that a stock unit? The stock XS650B had internal wires but to answer your question, yes they would need to connect in the headlight bucket. Check the tech section for the correct hookup inside the bucket.

Yeah it's stock just that the previous owner put new bars on so routed the cables outside

 

[Dom]

Having looked at the wiring diagrams on here I think the spare unit I have is from a 1974 tx650, it has red/white and brown wires where as the 75 has different colours

 

[Wingedwheel]

It appears you need a brown and yellow however if you have a brown with a r/w you know what to hook it to, but if you don’t have the wires in the loom you can make them whatever you want.

 

[Dom]

I think I might know what I need to connect into going by the diagrams, I just don't want to blow anything

 

[650Skull]

Diagrams are notorious for having mistakes.

 

[Dom]

Thanks that's great, what about the two wires from the kill switch that I've not photographed?

 

[650Skull]

Yea they look good from here

 

[650Skull]

Thanks that's great, what about the two wires from the kill switch that I've not photographed?

Need to know the colours before i can tell you where they go..............A pic.........I'm not psychic

 

[Dom]

Need to know the colours before i can tell you where they go..............A pic.........I'm not psychic

One is red/white the other brown

 

[650Skull]

Doing your own works means your going to have to learn.

One of the best ways to learn is to go through the whole loom, clean/check all connections, (bullet, couplings and all grounds/earths), while doing a continuity test of all circuits, between switches then on the wires through switches. Disassemble the bar switches, clean check for damaged wires, and re-grease, with a lithium type, (the bar-switches i mean on moving parts)

Doing this circuit by circuit while using the diagram, you will slowly get to know loom and how it works. The intricacies on how a part works isn't important. The important thing is to get to know where goes to what. Doing this will also have your loom/Harness in top shape by identifying any cut or damaged wires or cleaning up any oxidization or damaged couplings.

Simple layman's terms on what happens when the key is turned on, by XSLeo
https://www.xs650.com/threads/what-happens-when-you-turn-your-key-on.9625/

Important read, by DaddyG
https://www.xs650.com/threads/grounds-so-important.41775/

Simple guide to continuity testing using a Meter
https://www.xs650.com/threads/continuity-testing-made-easy.49917/

Good read as per the heading, by 19074jh5
https://www.xs650.com/threads/wiring-harness-musings.18925/

A bit more of an indepth on Electrics, By Dan
http://www.dansmc.com/electricaltesting.htm


A good way that helps is to brake the diagram into circuits. Print off a few and use a marker to blot out and leave just the wires/circuit your working on. Or if your proficent and have a Photo, (like Photoshop), program where you can blot out areas as per the diagram below

I have done this to the 75/76 diagram and have left just the ignition circuit and kill switch. On this it has a Br and Y wire going to and from the Kill switch, (the Y could be just a mistake on the diagram), when you trace the Y from the kill switch it joins up with a R/W going to the coils. So maybe that Y should be a R/W all the way, which would make it the same as yours with a Br and R/W wire

 

[Dom]

Thanks so much 650Skull, that's a huge help! I will go through it all when a get a day to myself

 

[Dom]

Bit of a mess in here

 

[650Skull]

Yes you have that horrible set up with 2 power wires in the indicators...........I think there has already been information and pics reposted about that

This is for a 74TXA factory set up. Haven't got one for a 75 there will be some differences, not many but it is a good guide.

 

[willis]

That's about half of what most people have crammed in there... LOL

That's a great headlight diagram Skull. Never seen that one before.

 

[650Skull]

From the 74 Assembly manual. Got it from thexscafe. Has the 76 Assembly manual with the headlight bucket waireing as well

 

[Wingedwheel]

That's about half of what most people have crammed in there... LOL

That's a great headlight diagram Skull. Never seen that one before.

Agreed, that diagram helped me out several times to the point I’m actually comfortable going in there lol Of course Skull added to it but it’s pretty self- explanatory.

 

[650Skull]

Agreed, that diagram helped me out several times to the point I’m actually comfortable going in there lol Of course Skull added to it but it’s pretty self- explanatory.

But I'm not the sharpest pencil so i need to remind myself

 

[Dom]

Brilliant guys, really helpful! I'll get it sorted in time I'm sure