Hey everyone I would appreciate any help or advice thrown my way This is currently how I have my wiring set up on my 1979 xs650 First time working on an older bike like this, The previous owner hacked the wiring to pieces so I basically had to start from scratch After sifting through hundreds of diagrams i finally got her running, sort of A fresh battery has been installed and it runs great BUT I'm concerned about how the regulator is hooked up A green wire running from it goes to the bottom brush on the stator A black wire coming from it goes to the top brush The brown wire coming from it is supposed to tie into the other brown wires running through the bike When I first got the bike it was hooked up into the rear brake switch, since I didn't have a brake light at the time I capped the wire and removed the switch Since then I have been looking online and saw the brown wire coming from the regulator was supposed to tie into all the other brown wires i did so and boom blew a fuse Tried it again and of course blew it Seems like the problem has to be the regulator since it starts right up and runs fine without that brown wire from it hooked up I have included a diagram for reference I have taken off most things I would find unnecessary i.e. tach lights, high beam indicator, turn signals, light checker I think I have everything wired in correctly but this has me stumped Any help is greatly appreciated, sorry again for my ignorance
Post by ignitionsystem on Nov 20, 2015 8:05:47 GMT -5
1. Disconnect both the black and green wire from the regulator. 2. If the fuse still blows, its a short in the regulator or the green wire. 3. If the fuse does not blow after step #1 then most likely your rotor is shorted. 4. In any event, measure the resistance of the rotor from one slip ring to the other with the brushes removed. 5. #4 should be about 5 Ohms. 6. When you reinstall the brushes, check your installation to be sure the green wire brush is not shorted to ground. 7. With the green and black wires disconnected and after seeing 5 Ohms on the slip rings, measure from brush to brush and look for 5+ Ohms. 8. Measure resistance from each brush to ground. Should be infinite with wires disconnected. 9. Let's not forget the simple things: Like, what is the amp rating of the fuse? Should be 20 Amps.
r80rt: :)This is a splendid write up, THANK YOU!!!!
Dec 26, 2015 16:54:05 GMT -5
mashermoto: What the what is this shoutbox for? Or should I shout, WHAT THE WHAT IS THIS SHOUTBOX FOR!
May 12, 2016 22:22:21 GMT -5
motormike: Good Day ...just a FYI.. Wild Cat is this Labor Day weekend. Still go'n on. A few 650's still make the scene. Various rides at different skill levels each day.. awards dinner sunday eve. BS in the park'n lot after dinner.
Aug 23, 2016 7:57:01 GMT -5
lsettle: First post in over 6 years!
Aug 28, 2016 19:45:17 GMT -5
kardon: Wow quiet here, where did they all go.
Oct 7, 2016 2:18:13 GMT -5
gggGary: XS650.com LOL
Feb 16, 2017 20:49:02 GMT -5
buell88: Anybody have any idea who built the xs650 tracker used in the Draggin Jeans Ad on Pipeburn?
May 16, 2017 16:24:09 GMT -5
joshua: The regulator/rectifier unit I got from Mikes PMA has closer hole spacing than original. Are we supposed to mill the holes to fit?
Jun 7, 2017 19:25:58 GMT -5
joshua: My bad. I found the bracket they supplied to mount the rectifier/regulator... Uh oh. How is this meant to work? Which way is it meant to mount? Looks like I have to use some spacers or something. Good instructions would be nice.
Jun 7, 2017 22:09:52 GMT -5
craig8johnson: Not sure if this is the right spot or not but oh well...
Jul 11, 2017 18:04:15 GMT -5
craig8johnson: I'm checking the charging system. I'm afraid I might have fried the last battery. With the solid state regulator (after market) what should it be charging at. The book says, I think, 15 volts. I'm hitting 17 when revved. Is that too high?
Jul 11, 2017 18:06:19 GMT -5
gggGary: Yes 17 volts is too high, about 14 volts is max, sounds like you don't have the right regulator or it's wired wrong.
Jul 13, 2017 6:54:33 GMT -5
dean: Just saying Hello, new member who is going to fix up a 79 XS650 that has seen its better days. I will definitely have lots of questions coming up.
Jun 23, 2018 16:45:32 GMT -5
tt650: Trying to breathe life into a 1980 that's been stored (indoors) for 25 yrs. Air filters are dry rotted. Have cleaned carbs but she only runs briefly on choke then stops. Need jet setting info and other ideas that might help her idle and rev.
Jul 3, 2018 19:15:19 GMT -5
trix13: Hey everyone! New to the forum and am fighting those gremlins!! New charging system, ignition switch, coil and fuse box. Resistance is higher than normal on the ignition pick up so I'm trying to find one. No such luck yet.
Aug 16, 2018 8:50:48 GMT -5
trix13: Also, even though all of my connections are clean, I cannot seem to find out why , when at higher rpms, I hit the signals and the rpms pulse with the signals...hahah. same with the brake light. I appreciate all input!!
Aug 16, 2018 8:55:08 GMT -5
bob99: how do I post a question. I am new to the forum
Jun 6, 2019 10:52:10 GMT -5
adlpc: Hello all! Been enjoying your edifying posts and discussions - and as a fan of the XS650 since my early teenage years happy that I now own a 1980 Special which I plan to turn into a vintage half faired racer. Thank you all for being here!
Oct 1, 2019 0:58:56 GMT -5
jimothyj: Hello everyone, I just joined & wish would have known about this site in 2014 when I brought my 1974 TX650A back from the grave. I have spent a good deal of $$ and alot of time on it. Just painted it and working on electrical, I will post pics soon,
Apr 10, 2021 2:14:13 GMT -5
louisvan: trix13 - I had a problem with my 1975 SX650. When I got to highway speeds, the engine lost power. The problem was in the connectors. At a certain vibration and the wind pushing on the wiring loom, the connector lost continuity. A bad crimp to the wire.
May 20, 2021 1:19:09 GMT -5