Help with headlight

Hi all i have been givin a 1991 XJ 600 real scruffy but all was working apart from the tail lightstraced it to a broken wire fixed it and now they work problem is the headlight has stoped working checked for contnuity and everything seem fine even tried a new bulb. Is there anything i could try any help would be very much appreciated

 

Start by checking your fuses. You may still have a bit of bare wire touching the frame somewhere.

 

All fuses are good. I did buy a haynes manual just for the wiring diagram but the diagram is usless as there is no legend or colour codes for the wires so i have no idea what colour traces go to where

 

If the 600 is like the 550 the headlight comes on when the engine is running.

 

Antrim NH ?
I ask because you spelled color, colour.

 

Antrim Northern Ireland the headlight comes on without the engine running

 

A color diagram can be found here. Edit: wrong model and year. Give me a minute and I'lll find the right one.

viewtopic.php (SecaII diagram if anyone needs it).


Edit #2

A free with account copy: XJ600 Wiring Diagram

I'll keep looking. I thought I had a PDF of it saved but can't seem to find the thing.


It's unlike Haynes to not have each wire labled with color codes, but every publisher does make mistakes occasionally.

Also check that the headlight switch is functioning. The contacts might need to be cleaned.

 

check for voltage at headlight socket black is ground
green wire is low beam
yellow wire is high beam

from key it is a blue with black stripe to high low switch

 

Colour diagram is great thanks for that i have already cleaned the switch gear

 

Is black wire a common ground?

 

I have a 1992 xj600 factory service manual in pdf if that will help you I can upload it to we transfer

 

yes black is common ground

you have a main switch (1) and a lights switch (32) ?

 

Factory service manual would be great Thanks XJ5550H

 

link in your inbox good for 7 days

 

Note my edit. I linked the wrong diagram before.

 

Thank you so much everybody i shall let you know how i get on

 

Hi again how do i check for voltage at headlight and if there is none where do i go from there

 

Hi again how do i check for voltage at headlight and if there is none where do i go from there

 

haynes wiring diagram for the xj600 is shyte, the key numbers dont match, and theres no colour key,
if you now have the correct diagram ,
if you dont have main or dip lights working then chances are , the fault is earlier on in the circuit,.
first check for voltage in and out of the fuse with red/yellow wires
if you have a multimeter, set it to dc volts 20ish, put one probe on a good earth ,or battery earth
put the other probe on the fuse, both in and out with ignition on
red /yellow wire then goes to the r.h. light switch
check for voltage there in the same way
wire colour then changes to blue / black, check for voltage there on the blue/black
the blue / black wire then goes to the high / low beam switch on the r.h
let us know how you go on up to there
if you dont have a multimeter a test bulb with 2 wires attached is just as good
i prefer a test screwdriver with earth wire , for initial testing
stu

 

by the way , 1991 xj600?
we are talking a 3km, pre diversion, model here aren't we and not the 4br diversion model, i think that was available that year

 

Yep pre diversion just done what you said checked r/y wire at the fuse box all ok 11. something volts moved up the loom to where right hand switch gear joins the loom connected to the r/y wire loom side of the block and there was a sound like a spark and know i have nothing checked all fuses all ok replaced them just for good measure and nothing it is completley dead

 

start again at red /yellow wire on fuses, in and out

 

Nothing at the fuse box now

 

anything on the red wired fuse?

 

12.56v from red wire in and out

 

red wire goes to ignition switch, then colour changes to brown , then goes back to the fuse box brown wired fuse, test the brown wired fuse ,in and out, that then splits to the red / yellow fuse , and the red / white wire fuse.

 

Thanks i shall let you know how I get on tomorrow as it is getting late here

 

Hi all found the promlem broken red wire from the ignition switch which was connecting and then not so Thank you all for the help. Now next step is fork seals and brake rebuild with braided lines