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electrical

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Thread
'83 xj550 Headlight troubles

Everything works fairly well on my xj550, except for the headlight. I tried just replacing the headlight but that didn't work. Then I used a...

Thread by: xHoser, Jul 27, 2026 at 4:28 PM, 1 replies, in forum: XJ Technical Chat
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Everything *BUT* the Headlight works

Any suggestions where to start? I've swapped the bulb for a new one and it still doesn't come on, high or low. Gonna check the fusebox tonight and...

Thread by: Joe550, May 1, 2026, 7 replies, in forum: XJ Technical Chat
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1982 SECA 650

Hey y’all, I got a weird issue going on with my 82’ Seca 650. It’s intermittent but there have been times where just turning the key causes the...

Thread by: Duck_Newton, Sep 10, 2025, 3 replies, in forum: XJ Technical Chat
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Diagnosing Charging Issue (I've tried it all)

I have a 1982 Yamaha XJ 550 that I bought as a flip. Currently, the bike will not charge itself. I've replaced the stator, the R/R, the battery,...

Thread by: Will Beemer, Aug 28, 2025, 1 replies, in forum: XJ Technical Chat
Thread
XJ650 Wire Harness

Here's the XJ650 wire harness that I posted years ago.. Some old links were broken so here it is again! [IMG] Scalable/Printable PDF linked...

Thread by: slackard, Jan 22, 2025, 10 replies, in forum: XJ Technical Chat
Thread
82 XJ 650 - Modifying Wireharness for Engine Test Fire (without re-installing it in the Frame)

Hey Fam, The mechanical/fuel systems are nearly a go - last step is to add back in the oil. The wiring harness that I completely pulled off the...

Thread by: MindtheTread, Oct 6, 2024, 8 replies, in forum: XJ Technical Chat
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Ignition coil help!!!

Hello. I have a problem. I'm trying to do a simple wiring for an XJ550 engine to put in a go kart. I wouldn't like to put the battery on the go...

Thread by: Tommaso, Jul 28, 2024, 1 replies, in forum: XJ Technical Chat
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Odd Electrical issue Batt warning and dim lights on Dash when braking

I have an '82 XJ750 Seca that, with much help from previous posts in this forum, have helped me get this bike back up and running. (Carb cleaning...

Thread by: Gnr782, Apr 19, 2024, 2 replies, in forum: XJ Technical Chat
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Completely Lost on Issue with Alternator Wiring

I purchased my first motorcycle a few weeks back, an '82 XJ650 Maxim, with a lot of custom work. It has been modified to a bobber style, which was...

Thread by: Deneb Hernandez, Apr 11, 2024, 1 replies, in forum: XJ Technical Chat
Thread
‘82 XJ550 Maxim No Spark

I’ve got an 82 550 Maxim that I’ve poured too much money into at this point and have done everything under the sun to get running, and it was up...

Thread by: CPKing, Jul 10, 2023, 1 replies, in forum: XJ Technical Chat
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1981 XJ750 RH - Wiring Quandary

In desperate need of help people. An rebuilding, what was a total basket case, of an ‘81 XJ 750 Seca. Up to the wiring stage. Main loom is in and...

Thread by: Bilby, Jul 4, 2023, 9 replies, in forum: XJ Technical Chat
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LED turn signal conversion woes

To make a long story short-ish, I replaced my rear turn signals with LEDs and now I have an interesting symptom: When my indicator light cluster...

Thread by: NotRad, Jun 19, 2023, 7 replies, in forum: XJ Technical Chat
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Front brake light

Hi all! Another question! I have a 1982 xj750 maxim. Im not exactly sure what the previous owner all did to it but there was already some...

Thread by: Rebecca Proppe, Apr 7, 2022, 3 replies, in forum: XJ Technical Chat
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LED Turn Signal Conversion

I’ve seen many posts with this topic but am not able to understand most of the content. My ’82 750 Maxim has a busted flasher relay and front left...

Thread by: Andrew Lake, Aug 19, 2021, 0 replies, in forum: XJ Technical Chat
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No Tail Light, but Brake Light Works

The tail light on my ‘82 XJ750 stopped working a few days ago. I still have a brake light when the brakes are applied, but no standing tail light....

Thread by: Andrew Lake, Aug 3, 2021, 8 replies, in forum: XJ Technical Chat
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Starter Issues

Hi all, I have an ‘82 XJ750. My starter has been having issues lately. On a cold start, the starter will not get the bike started. After...

Thread by: Andrew Lake, Jul 28, 2021, 9 replies, in forum: XJ Technical Chat
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Looking for electrical advice

1982 XJ 750, so here's my problem, I'll start the bike and the gauge lights will illuminate but not stay on while riding, or a running tail light...

Thread by: StrikeOut, Apr 11, 2021, 7 replies, in forum: XJ Technical Chat
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Need a wiring guru to please help. 81’ xj750 seca

Hello, so I thought my issue of my bike only turning off if taking off a battery lead was my ignition switch. So I removed it and cleaned it....

Thread by: Wegan, Aug 4, 2020, 5 replies, in forum: XJ Technical Chat
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'81 Maxim xj650 NO POWER

Hey all, I'm brand new here and just purchased my first project bike for the whopping price of $80 CAD. It's a 1981 Maxim 650 and I am getting...

Thread by: thecanadiankid, Aug 4, 2020, 7 replies, in forum: XJ Technical Chat
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Head unit electrical mess

So I just took off the head unit of the motorcycle and found this within the bucket I had to dremel cut off because it was already cracking and...

Thread by: Maxwell Partridge, Apr 17, 2020, 4 replies, in forum: XJ Technical Chat
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Rear wiring connections

On my 85 xj700 maxim I took apart all the electrical connections near the battery, including tail light and blinker wires and now I don’t know...

Thread by: jjack37, Apr 4, 2020, 2 replies, in forum: XJ Technical Chat
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1983 xj750 Midnight maxim build/project

1983 xj750 Midnight maxim build/project Hey guys! First post here - not sure if I’m doing it right... Anyway, Got this bike as a project, got...

Thread by: Mkehughes678, Aug 8, 2019, 12 replies, in forum: XJ Technical Chat
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electrical issue, lights dim with electrical load

The MOT check failed my 1986 XJ600 because of the tail light flashing when the indicator lights were turned on. It doesn't turn on and off, but...

Thread by: pre, Jul 23, 2019, 11 replies, in forum: XJ Technical Chat
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'82 XJ650 Maxim Electrical Trouble

Hey guys I just recently bought my first motorcycle to fix up and ride and I am running into some tough electrical problems, if you could help out...

Thread by: Ben Babuski, Jul 1, 2019, 13 replies, in forum: XJ Technical Chat
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82 xj750 maxim no dash/headlights

Hi all, I've been really enjoying the bike since I got it running, but I've run into a new issue. The other day I took it on the freeway for the...

Thread by: Winsleydale, May 12, 2019, 13 replies, in forum: XJ Technical Chat
Thread
82 xj750 maxim no dash/headlights

Hi all, I've been really enjoying the bike since I got it running, but I've run into a new issue. The other day I took it on the freeway for the...

Thread by: Winsleydale, May 12, 2019, 1 replies, in forum: XJ Technical Chat
Thread
Coil power on outside of wire/spark boot?!?!

1981 XJ750 SECA. Started running like crap, stumbling and losing power. Idling weird; sometimes low, sometimes high. (this was effected by my...

Thread by: Trevanion, Apr 22, 2019, 11 replies, in forum: XJ Technical Chat
Thread
Auxiliary Light/Fog Lamp 1981 Seca XJ750

Hey guys, So I'm having some issues with the wiring diagram and finding where everything goes. Worth noting that I am using a Haynes manual. I do...

Thread by: XJ750 Fever, Apr 3, 2019, 8 replies, in forum: XJ Technical Chat
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Anyone here with experience replacing the wiring system?

I purchased a 1983 xj550 a little while ago and since then I've been in the process of fixing it up. It has plenty of issues, many of which were...

Thread by: Brian S., Jan 2, 2019, 18 replies, in forum: XJ DIY How-To Instructions
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Solenoid Issue?

Swapped the bars on my 82 XJ550 Maxim, with painted drag bars. As soon as I put everything back together I pressed the start button and nothing...

Thread by: BhamXJ550, Dec 18, 2018, 10 replies, in forum: XJ Technical Chat
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(TESTING) 1982 XJ650RJ...No Spark

So... I am the new owner of a 1982 XJ650RJ. I love it, but I would love it more if it had a spark and ran. Cosmetically and mechanically it...

Thread by: jelm05, Oct 3, 2018, 18 replies, in forum: Test Zone
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Sizzle and frying sound when starting

1982 XJ650 Seca I'm making custom side covers and I wanted to set things back a little bit from the frame, so I relocated the solenoid and mounted...

Thread by: EagleLakeWood, Oct 4, 2018, 3 replies, in forum: XJ Technical Chat
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82 XJ550 Seca Starter issue

So my wife did something amazing and bought me a bike. It's my first one other than dirt bikes growing up, so I'm really excited, but it doesn't...

Thread by: ZachVanMatre, Aug 22, 2018, 35 replies, in forum: XJ Technical Chat
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85 XJ700 - turn / brake / tach fuse - HOT HOT then blown

The turn signal/tach/brake/nuetral light fuse just started blowing. I have done some reading and disconnected the brake pedal switch in my start...

Thread by: 45RidingAn85, Jun 5, 2018, 5 replies, in forum: XJ Technical Chat
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Starter solenoid has a mind of its own...

So I just finished an '86 Radian project of mine. Runs like a dream, cranks first try, good to go. BUT I have an issue. When riding my starter...

Thread by: JHBox13, Jun 1, 2018, 5 replies, in forum: XJ Technical Chat
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No power at all ('80 XJ650 Maxim I)

Hi, all. I'm in a hard spot with my bike and am hoping for some guidance. I'll try and be as concise and descriptive ass possible. -The other day...

Thread by: Franc, May 15, 2018, 5 replies, in forum: XJ Technical Chat
Thread
Somethings not right

I've been working on an 81 XJ550 Maxim trying to get it running so I can enjoy the good weather. I've gone through the carburator and synced...

Thread by: Tanner Petersen, May 12, 2018, 10 replies, in forum: XJ Technical Chat
Thread
81 Seca 550 electrical issues! Seeking guidance

Hello! I got a seca 550 a little over a year ago. It ran all last summer but started dying at random moments. I've been working on it and am still...

Thread by: blake, May 3, 2018, 8 replies, in forum: XJ Technical Chat
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No dash lights or turn signals - possibly loose ground?

I have an '82 XJ750 Maxim that has been quite reliable until this morning. All regular maintenance has been done - shims, replacing the fuse box...

Thread by: Lightcs1776, Apr 24, 2018, 13 replies, in forum: XJ Technical Chat
Thread
1982 XJ550 Seca dies…won't start…starts! Electrical-shmectical

Plot: A friend, we'll call 'em Dee, is riding the "new-to-me" '82 XJ550 Seca on beautiful Sunshine Coast backroads. Pulls a u-turn at destination...

Thread by: Wynken de Word, Sep 25, 2017, 7 replies, in forum: XJ Technical Chat
Thread
1981 Yamaha XJ650 battery

I Pulled the acid battery from my good 1981 xj650 to temporarily use on my exact same model 1981 xj650 project bike. After cleaning the carbs and...

Thread by: Get2theChopper, Aug 30, 2017, 20 replies, in forum: XJ Technical Chat
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XJ 650 Maxim Start Issue (new to this bike)

Hey everyone, I just got the XJ650 81' on Sunday and immediately began working on it. It was my fathers before and he had not ridden it in about...

Thread by: WArider87, Aug 3, 2017, 2 replies, in forum: XJ Technical Chat
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Electrical / Ignition Issues

Hello all, 82-83 Yamaha Xj750 Maxim. I'm having a problem with the electrical system. It seems like cylinders 2 and 3 aren't firing. At least it...

Thread by: Bleechmint, Jul 14, 2017, 4 replies, in forum: XJ Technical Chat
Thread
Ignition Issue.

Hello all, 82-83 Yamaha Xj750 Maxim. I'm having a problem with the electrical system. It seems like cylinders 2 and 3 aren't firing. At least it...

Thread by: Bleechmint, Jul 14, 2017, 1 replies, in forum: XJ DIY How-To Instructions
Thread
Steber's Cantankerous Wiring Conundrum

It's about that time in my build where its time to focus on a totally custom wiring harness. I'm choosing to start a separate thread, similar to...

Thread by: steber, Jul 10, 2017, 60 replies, in forum: XJ Modifications
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Electrical Issues on XJ650

I'm at a loss with some electrical problems. Right now I am having issues with: Turn Signals: When I got the bike a week ago, they worked. Then...

Thread by: Jmkrull, Jun 11, 2017, 31 replies, in forum: XJ Technical Chat
Thread
Lights dim when I brake

When I apply the brakes (front or rear), my headlight and instrument cluster dims slightly. I'm new to this bike so I have no idea if this is...

Thread by: XJ650JMaxim, Apr 14, 2017, 2 replies, in forum: XJ Technical Chat
Thread
Question on complete re-wire of XJ750

So I'm still working on my build thread... but I'm completely re-wiring my '82 XJ750 Maxim due to massive component replacement and electrical...

Thread by: Dr. Awesome, Apr 8, 2017, 4 replies, in forum: XJ Modifications
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Can you identify these OEM Connectors or where to find some?

I have been working through electrical stuff on the bike and I am building all new wiring harnesses, but I can't find these style connectors...

Thread by: Dr. Awesome, Feb 12, 2017, 21 replies, in forum: XJ Modifications
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Why do the turn signals make noise?

This may be too easy for most but I hate electricals and really appreciate any help. Yesterday I installed a replacement/modern fuse box on my...

Thread by: Baxter, Jan 24, 2017, 13 replies, in forum: XJ Technical Chat

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