series 3 xj6 1985 car
Trying to sort none - functioning inner main headights. I THINK the wiring is OK. - blue and white for power, black to earth. Pulling the L/H stalk doesn't get the relay to click. Does any body have a clue on how to test the relay (other than substitution)? Fuses OK
They did work a while ago prior to removal of the bonnet for a new one and the chance to re-new the inner bowls and dodgy wiring seemed like a good idea.
For what it's worth, the O/S outer bulb does not go onto main beam either................
Headlight relay?
Moderator:LJR
- CliveRothwell

- Posts:286
- Joined:Tue Dec 29, 2009 6:48 pm
- Location:Stamford, Lincolnshire
- Contact:
Re: Headlight relay?
I've taken the headlight relay apart in the past. You need a thin-bladed screwdriver to flex the cover over the small retaining lugs on the base. As far as I recall (it was years ago) the mechanism is pretty primitive and it's surprising how long the thing works without problems! A bit of contact cleaning and greasing the pivot sorted my problem.
1986 XJ6 Sovereign Series III
1991 XJS V12 "facelift"
2021 I-Pace SE
1991 XJS V12 "facelift"
2021 I-Pace SE
- CliveRothwell

- Posts:286
- Joined:Tue Dec 29, 2009 6:48 pm
- Location:Stamford, Lincolnshire
- Contact:
Re: Headlight relay?
That's a good tip Paul - I'll give it a shot. I assumed they were sealed units.............thanks!
Re: Headlight relay?
Clive
There's quite a good description and pics of refurbing the headlight relay here:
http://www.jag-lovers.org/v.htm?1080778679
There's quite a good description and pics of refurbing the headlight relay here:
http://www.jag-lovers.org/v.htm?1080778679
Al McL
'93 XJS 4.0 - '20 XF 2.0 Sportbrake
'93 XJS 4.0 - '20 XF 2.0 Sportbrake
- CliveRothwell

- Posts:286
- Joined:Tue Dec 29, 2009 6:48 pm
- Location:Stamford, Lincolnshire
- Contact:
Re: Headlight relay?
Excellent Al! Many thanks - can you stop it from raining as well?
- CliveRothwell

- Posts:286
- Joined:Tue Dec 29, 2009 6:48 pm
- Location:Stamford, Lincolnshire
- Contact:
Re: Headlight relay?
A really good web link Al, thanks. 4 days later, every connection cleaned, full continuity, 12v where it needs to be, Relay OK, 4 main beam lights but still no dip. Just booked it into an auto electrician - I'd sooner be driving it rather than messing with it any further! (This is partly why I put it into storage and bought the XJS which IS brilliant day in day out!)
- CliveRothwell

- Posts:286
- Joined:Tue Dec 29, 2009 6:48 pm
- Location:Stamford, Lincolnshire
- Contact:
Re: Headlight relay?
Yup - dodgy relay plus a burnt wire and enough tidying to make it a bill of £200 once they had added VAT
Still, I'll be able to see it rusting in the dark now!
Still, I'll be able to see it rusting in the dark now!
Who is online
Users browsing this forum: No registered users and 5 guests