wiring

  1. M

    XS400SE simplified rewire

    I'm working on designing the rewire for my 1981 XS400SE (4G5). I plan to use an RR38 regulator/rectifier and a simplified design for the wiring. I'm hoping this will eventually be an easy to follow diagram for any of you contemplating carrying out a rewire Can anybody point out any places I'm...
  2. G

    Electric start ground ?

    Hello, 1980 xs400 special Can anyone tell me, does the the electric start switch connect in anyway to the turn signal switch?
  3. mmmboost

    Need some rectifier/regulator input from some gurus.

    I can fix engines, I can fab parts, I can build tools.......but electrical stuff is not my strong suit. Anything more than just basic wiring or similar is beyond my area of expertise so I'm hoping to enlist some help from the more experienced people on here. I'm working on building a Cafe...
  4. levdir

    Charging system mystery (I promise this is something novel)

    Hi everyone. I'm starting a charging system thread, and a thousand apologies for that. My issue is, near as I can tell, a new one, and one that's virtually impossible to Google. My problem is that my new combined reg/rec seems to be outputting 12V flat to the battery. Just try searching for...
  5. W

    wiring swap

    hey everyone, new to this stuff.. was accidentally sent the wrong wiring harness for my 79 xs400f. was sent an 80... didnt want to go through the whole shipping back and what not, and have almost everything rewired for it. BUT, ran into 1 problem- the pick up on the 79 has 2 wires while the...
  6. dirtydio

    chopped wiring help

    hey guys I came across this wiring diagram and wondered if it will work or better yet if there's something missing thank you for any help
  7. Cheeseman

    1981 yamaha xs400 where do i hook these two wires to?

    New to this forum and the world of rebuilding a 1981 Yamaha XS400! I purchased this bike from a buddy for 150$ it was completely disassembled right down to the frame and the parts where in a box... I've been putting it all back together now and she is almost ready to start! Just one small...
  8. C

    my wiring diagram

    Hey guys, will this charging diagram part of my system work? I am SO LOST, but feel like I'm getting close to grasping.
  9. H

    Wiring New Headlight Switch

    Greetings! I recently purchased new handlebar switches from MikesXS. They have arrived and look great. The right hand switch installation was simple. The left hand switch, not so much. I have blinkers and a horn, but no headlight. I have a 1981 XS400. The original light switch had 6-wires...
  10. A

    Need Help Wiring High/Low Switch

    I need some help on wiring. I have a 1977 XS400 and I bought a left side handlebar control that has the blinker control, horn, and High/Low beam switch from DimeCityCycles. I wired up the headlight, yellow wire, green, and black, but the light isn't coming on. I noticed that when I took apart...
  11. M

    help me id this cable near clutch

    I replaced the handlebars on my 1981 but in doing so a cable next to the new clutch cable came apart.... I dont know what it is to know if I can purchase a new one or if it is able m to reconnect how it is currently. Basically I don't know much of anything about this bike... or any. It is my...
  12. ksqrly

    rectifier questions.

    So I just bought a 1982 yamaha seca 400 and I am building my own wiring diagram. I am using on relays and the old ignition and rectifier. I was looking at my bike and there is four wires besides the three yellow wires coming from the rectifier. I looked as many diagrams as I could find and they...
  13. Drewcifer

    Rewiring Stator and Regulator Swap

    So I wrote about this last week and since 3 of us have had the same issues, I figured it's time for pictures. I lost my voltage regulator. It shorted out and then the bike lost tons of volts with the key on. I could trickle charge it over night but it bothered me how much I was losing power...
  14. M

    wiring issue - ignition

    howdy, 78 xs400 - someone did a nice hackjob on the wiring and it's not getting spark. The orange coil wire is going spliced into and going to both coils while the grey coil wire has been cut and isn't connected to anything. Using my multi meter, I see both the + and - sides of the coil...
  15. tbakic

    dual headlights project, wiring not matching diagram

    so im trying to make a dual headlight set up, here is what i want no switches, on or off or high or low constantly on headlights no high beam indicator no turn signals i dowloaded the wiring diagram for my 80' 400 special and started tracing the headlight back to the main wiring harness and...
  16. Travis

    Yamaha XS400 Wiring Diagrams

    Let's make this the official wiring diagram thread... Please add them as you find them.. If you have a specific electrical or wiring question about your bike, please start your own thread. Thanks. Here are some wiring diagrams I found on the net. Some of the file names give a clue as to...
  17. rmal

    XS400 bobber - headlight question

    Building an 1978 XS400 brat style - cut down the front springs 2" and replaced stock rear shocks with rebel shocks, plus some other frame mods. Could use some help with a question. On a stock XS400, with the battery and the stock harness, does the headlight light when the key is turned on...
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