electrical

Almost done with this beauty. Timing set perfectly. Valves set. Carbs synced. Back brakes on, I await a new seal and piston front MC. But here. This is weird. Sometimes go to turn the key she’s dead. Fiddle with fuse box, she’s good.

New to custom fab and can fabricate the parts but the wiring is new to me but have seen the motogadget options. does anyone have exprience with these or are they reliable and anyone have a complete set of wiring diagrams and what to look out for during the build. Side note havent bought the...

Hey all. I need to order a battery for this project ‘73 xs650 I inherited. Is this the stock battery box? And if so, can someone confirm the battery size I need? I mistakenly ordered a Yuasa YB12A-A and that was too big for this compartment.

Hello, I lost the key to my bike and installed a new one, everything was working fine including lights, ignition, and horn. I recently redid the carbs and put on aftermarket intakes, after installing the tank back on and plumbing everything, nothing comes on at all. When turning key, nothing...

So this is stumping me. Yesterday, I put the key in and turn it. Put the bike in neutral (green neutral light was on), press the start button, and everything goes blank. No neutral light, no horn, no nothing. Turned the key off and checked the fuses, nothing blown. Turned the key back on and...

There’s a description of my project bike, in the introductory post I made 26Jul, that I have questions about. The bike came to me basically finished but for the electrics. It was running when I first bid on it (on the NZ equivalent of Craigslist), but it was withdrawn from auction because its...

Those stock fuse boxes do not age well so many have opted to replace with blade fuses. Unfortunately blade fuses do not always provide a snappy response to a short circuit as was the case with those original glass fuses. Generic blade fuses may be responsible for melted wires due to excessive...

Here’s my dilemma. Just recently got my Bike all put together motor rebuilt by limeys bike shop in Austin TX. Bike fires up and runs but after it gets warmed up, say 10 or 15 minutes into the ride if I slow down to a stop say at a red light or stop sign my left carb will hiss like a backfire out...

Hey fellas, recently just finished wiring in a brand new harness. Before I completed the wiring I wired the ignition etc. in just to get the bike running, it ran really well and I had it tuned, timed and carbs synced to almost perfect. Throttle response great even in the cold and all the way...

Hello, I recently aquired a 1979 XS650 SF with a points ignition system. The bike has no spark and while trying to diagnose it I decided to set the points. I watched a video on youtube () that shows how to set the points. Included in that link is a timestamp to where he uses a 12v test light to...

Hi all I am trying to identify the white connectors on a replacement wire loom from Mikes XS. can you help? see below. https://www.mikesxs.net/yamaha-xs650-wire-harness-70-71-oem-256-82590-oem-256-82590-30-00.html at first glance they look like pin connectors inside but they are a blade...

Post no 7 https://www.xs650.com/threads/xs650-model-identification-year-vin-workshop-manuals-and-other-information.30569/#post-307266

I have a 1981 Special, i had it running for a couple of weeks this summer with no issues, and all of a sudden while riding home from work the bike started surging and cutting in and out, with a weird sounding engine note. I tried giving it gas to keep it alive but it eventually died completely...

Hello, First of all, I am thankful for all the information I have already gotten from XS650 Forum and I plan to continue to support this site and be a good member. My name is Patrick and just got the bike I wanted 40 years. I love it. My plan is to get it reliable and keep it with historic...

Hey guys I have done a little more digging and found this diagram. Wanted to see if anyone had any thoughts on if it can be used for the 79 XS650SF year. This is a new engine to me and I have it as a donor engine to my old one. If it is stock can I use the new Pamco Electrical Ignition on...

Hey everyone stoked to get a donor engine to replace my current crappy engine that I don’t have time to fix. 1. 2F0-171615..... not sure which bike this is I wanted to say 1978 XS650SE but not sure. 2. does anyone have a simplified wire diagram for this bike?? It is completely stock engine...

Okay so here goes I am new to motorcycles and garage mechanics. My first real project and I’ve run into some electrical problems. I have removed the tach/speedo/light cluster from the bike with only cutting one ground wire, the rest were just unplugged. However my issue now is I have no electric...

Hey everybody. Just recently got my 1983 XS650 SH up and running again with the help of a local shop. Just put a new battery and regulator in but now I’m not seeing the charge I want. Battery started around 13.3 and went to just under (13.27/13.25) with everything off. Accessories on it went to...

This is my very first motorcycle project. I bought this aftermarket device for my turn signals, headlight, and horn control. It only has 8 wires while the original setup on my 1982 XS400s has 10 wires. However, they serve the same function (except the original blinker switch comes back to the...

Hey yall, I almost had this bike (81 xs stock) ready for the road, but recently it's been blowing the ignition fuse. On my numerous test rides up until recently it hasn't been an issue, but now it's eating through fuses and today I couldn't even get it started. The ignition fuse gets wicked hot...