Xj 750 J headlight issues

Hey guys need some help i have been digging around for three days now trying to figure this one out. my headlight was running intermittently for a few days and now wont come on but neither will my dash light the neutral and warning and blinker lights all work but the light to see my speed or tach dont work and both my headlight and aux light no longer work. I checked the fuses they looked fine but replaced the fusses anyway. still nothing now i know that this bike DOES NOT have a headlight relay. went into the bucket and found the 5 amp fuse it was fine looked great. checked all the connectors in there and they seemed fine cleaned and connected the light bulb looks fine doesn't look broken or anything. so any guesses please thanks guys.

 

"checked the fuses and they all look great"

Original fusebox, glass fuses? If so, it's not the fuses that are the issue; it's the clips. They crystallize and can break all on their own.

Rebuild or retrofit a modern blade-type fuse panel.

Speedo/tach come on with the headlight; so you've got a problem in the HL circuit somewhere. Start at the fuse box. That and get inside the headlight shell and start looking for loose ground wires.

 

I checked the tabs and they are fine i checked for voltage on the fuse to make sure. but i do plane on converting to clips this winter but i dont have the time to solder in the conversion right now. and i went all through the bucket looking for ground issues. havnt found one yet i guess ill keep looking.
and when you said the HL thing that reminded me when the headlight was on before i hit the high beam switch one time and the light shut off instead and came back after reving the bike. if its any help..


THANKS FITS BTW

 

OK got a big question i was checking that the yellow/green wire was conected to the positive side of the battery mainly just poiking around now. but found out that if the light bulb is in and i check from the yellow/green wire to the black there connected in the bulb is that supposed to happen?

 

Maybe the high/low beam switch contacts are preventing the headlight circuit from working?

 

how would i cure that i also checked and every ground wire in the buck is grounded. Thanks Fits

 

SO i have been through every ground lead and there are all working. i have cleaned and checked all connectors in the bucket and the switches on the handlebars. still have not found any culprit or reason why this is happing. anybody else think of anything.

 

could the problem be the headlight bulb would that cause these issues?

 

also i am only getting around 4.23V to the yellow/green wire nothing to the green/red wire. but when i put the light bulb back in the 4.23v goes to 0v is that normal...also this is not a sealed beam it has its own halogen light bulb could this be causing an issue?? thanks guys

 

what you need is a continuity tester. with one, you can test the headlight bulb, the high/low switch and all the rest of the wire harness. you can buy one or make a simple one with a 12v bulb and a battery and some wire, or use an ohm meter. for that matter, you can test the headlight bulb by just running a couple pieces of wire to a 12v battery to test it.

CN

 

Soo still have not gotten the head lamp to work at all. i have checked and cleaned every connector and ground in the bucket cleaned and checked the high low switch even replaced the aux switch cause that could be the issue but nothing yet I'm really struggling here guys if anybody could take the time to help me id really appreciate it. Thanks guys.

 

my start button was sticking on just enough to keep the headlight off but not enough to keep cranking the starter had to clean the start button contacts

 

i cleaned all the contacts in the left and right handle bars and redid it twice lol. I also cleaned the connections in the bucket. Thanks for the advice ill probably double check em still.

 

I have been over every thing of the headlamp rout i think the problem is in the computer console part that i can't get to the wires go and in and come out but i can't go in a fix it.

What i think i want to do i wire a new wire harness for just the headlamp? going from the ignition wire to a relay then to the high low switch. I have a bike that has no headlight relay, but to wire a new one i think i need to install a relay is this correct? cause i can't find any specific directions to do this on a bike that dosnt have a relay. any help would be amazing thanks guys.

 

you need to make up a test lamp, and work through the diagram checking for power at each point, its not hard if you go about it in a sequential manner, instead of checking individual parts on their own.
I see you've been at this since last October,?
make up a test bulb using the bikes headlamp bulb, get 2 pieces of wire attach one wire from the bulbs case or ground terminal to the battery -ve.
attach the other wire to one of the bulbs filament connections.
now work through the circuit, touching the end of the test wire onto the live circuit, starting with the battery +ve
the bulb should light.
next go to the fusebox (ign.on) touch the test wire on the incoming side of the headlight fuse, then on the outgoing side ,red/yellow wires
the bulb should light each time
then work through the rest of the circuit
i.e.light switches ,connectors etc
when you get to the point that the bulb doesn't light ,
you've found the fault.
stu

 

if you don't have the diagrams here they are in 2 parts, but you can print them off and stick them together


part2

 

Hey thanks i have the service manual but this one in color is way nicer thanks dude and ill try what you suggested and see where it goes.

 

just a thought that might help, as the diagrams I posted are not very good, as in, there is no circuits shown for the interior of the console, so its hard to trace through that,
but,
does your bike have a "pass" switch for the main beam, " # 30 i think on the diagram" ,if so, does the high beam work when pressed.
this bypasses all the handlebar switches, and takes it power from the fuse box.
if it still doesn't work, and there is power to the fusebox,
then you need to look nearer to the headlight or console.
stu

 

I have never seen a pass switch the only switches it has is the high low switch i can't even shut the lights off if wanted (thought thats illegal to ride without one on) Maybe if someone else knows of this switch on the bike please let me know.

Further i do believe the problem is in the console but i could not figure out how to get the console taken down all the way to show the connectors. And have never found a diagram showing the connectors the manual i have shows a wire diagram but no diagram for the console. Thanks for the help though Bensalf Its very appreciative.

 

You won't have a headlight "on/off" switch nor a "pass" switch on a North American market bike.