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I have a 1970 CT1, and I just recently got it all assembled. I am not sure which brown cable should be plugged into the horn. There are two brown cables there that have two put into one connector. Does anybody know how to tell which one it should go to? I think it comes from the rear or front brake switch. There is also a brown with white stripe cable that has a scale it connects to but doesn't reach. What does this go to?
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Welcome to the forum. The two brown wires, that go into one, are for the front & rear brake switches. There should be another brown wire that goes to the horn. They are all wired into the same wire leading to the main switch.
Please confirm what year of CT1 you have, (looking at the vin chart here) https://www.legends-yamaha-enduros.com/vin-numbers
If you have a 1970 Yamaha CT1B USA model, it did not have turn signals. If you have a 1971 Yamaha CT1C it did have turn signals. The brown and white wire is used for the flasher relay. If you have a CT1B, you can leave the wiring unplugged as it is not used.
1970 Yamaha CT1B Wiring Diagram
1971 Yamaha CT1C Wiring Diagram
Thanks for posting pictures! I noticed that you have shocks from a later model, (they are thermal flow).
Just to echo what Enduronut said, you will have to pay money to fix the front wheel. 70% of the motorcycles stopping power is from the front wheel, so it is good to spend the money to make it right. Another Yamaha Enduro Fan, went over the handle bars, when his front end locked up, and he suffered brain damage.
To answer this question: "I may be able to cut the bad threads off, rethread it, and buy a new bolt. If that does not work what would you recommend?"
Below is just my opinion...
If you cut the bad threads off you are losing some of the adjustment length. Also, the metal has been worn down, re-threading it wouldn't really fix it. To have it fixed, you would need to build up the metal, by welding, then you would need to put it in a lathe, and lastly re-thread it.
The cost to have this fixed would likely cost more then buying one from Ebay.
Hello, and welcome to the site
Sounds like your bike is highly modified , which makes it more difficult for us to correctly answer questions you may have. Simply because we don't know what we're dealing with . . . no telling what has, or hasn't been changed over the years . . . that leaves us guessing a lot. People often refer to these modified bikes as "Franken-bikes".
Moving forward, I think it'd probably help us > help you <, if you post detailed pictures of whatever you're asking about . . . . besides, who doesn't like pictures ... I'd love to see your bike.
You'll probably have to obtain the stock wheel / axle set-up, or ... if you want to keep the 21" rim and tire, you can change it back to a stock hub / spacers / axle, and re-lace the rim with the correct Yamaha 21" spoke set for the stock hub. Either way, it sounds like it's going to take money and effort to achieve proper functioning again.