Can some one help me?........ please. *now with more pics*

[stratie]

I will try and keep this short, other wise i'll confuse my self even more.
When i turn my lights to the postion (it's a six way switch...lightweight) It sounds like the horn is going off, only it was coming from behind the speedo.
I've pulled the speedo/dash out to have a look, and the buzzing horn sound is coming from  the relay (the one on the right) I've allso got a head light out, but the bulb is fine?
Anybody  :(?
 

[sMUDge]

I presume you've got the Military light switch 

[stratie]

Yes smudge, it's a lightweight.

[sMUDge]

People have been known to fit those switches to non "Mil" Land Rovers & visa-versa  ;) 

Has anyone been "playing" with the switch/relays/loom     They are a pain at the best of times  :lol:

[stratie]

People have been known to fit those switches to non "Mil" Land Rovers & visa-versa  ;) 

Smudge mate, i keep forgetting there is know tone of voice on the internet, so when i said "Yes smudge, it's a lightweight" i didn't mean it to sound cocky. Sorry mate  :D

It's got a set of spot lights fitted, and i can only guess that they were fitted because the stock lights arnt fantastic.
Infact they are a tad on the dim side.

Ther is the odd wire that seem's to go no where, but other than that, it looks ok.......i think  :lol:

[S188]

I'm guessing that relay is the flasher unit for the indicators?  They are controled by the milatry light switch as they only work when the lights are in some positions.  If you wire them up wrong you can make them buzz so check its not shorting and wired right.  Hazard switch if fitted can cause problems with indicators too.

Headlamp is probubly a bullet conector around the front pannel if one side works - give it a wiggle.  If you think the headlights are crap, which is almost sertainly true then throw them in the bin and fit a pair of Cibie H180's with decent H4 bulbs along with relays and clean earths - with that you'll have headlights better than some modern cars and it'll make other "halogen conversions" look like sealed beams (the Ring ones are definately worth avoiding).

[lightweight-love]

does look like a flasher relay maybe, do you have a 'infra-rad' switch on the instrument panel? maybe above 6 way switch, my infrared switch turns on only the headlights so could help track the cause of problem?

[stratie]

If it is the flasher relay, then why do the winkers still work?

Every thing works as it should, apart from one head light.

When i first bought the truck i was playing with the switches as you do. I hit this switch and got  the buzzing noise.
So i filcked it off and thought nothing of it.

[stratie]

Then i went out for a drive with a mate, when we got back the spot lights were on, and wouldn't switch off?
So i pulled out the inline fuse to knock the spots out.

[stratie]

It was a few days later when i took the truck out again. It was getting dark-ish, so i put the lights on, all was well untill i put the heater on. Thats when i got the buzzing noise again, and the only way to stop the buzzing noise was to turn off the lights.
Im 99.9% sure, that the buzzing noise is coming from the relay behind the dash.
Im know sparky, so im stuck.
I can buy a new relay, but what if it still makes that noise?

[stratie]

I just had a brain wave  :D.........well sort of.
I've just pulled this wire off the spotlight relay because in runs to the ignition (my thinking behind this is that if it runs to the ignition it may still be getting power) And hey presto it worked....So i thought i would connect it again just to doubble check. i did, and still no noise? ummmmm now this really has foxed me?

[stratie]

I just flicked this switch down, and the buzzing noise came back, filck it up and it stops.
Only thing is i dont know what the switch is for? allso the left hand head light is now working, but very very dim.
Im going to do away with the spots....
A, I dont like them.
B, Im sure they have been wired up wrong.
C, umm errr i dont like them.

I'll see if i can trace the wire's from the switch and see if the run to the relay. I suppose i could disconnect the wire's from the back of said switch and see what happens.
I'll give it ago.

[hobbit]

Ok here's one for you, when I upgraded the wiring on my disco headlights, I fitted a realy for each dip and beam on the headlights, I used the original headlight feeds as switching feeds for the relays.

Works great, only thing is when I use the side lights on the machine, (dim dip) the relay for the dipped headlights buzzes like what you describe, ok its a disco and series dont have dim dips, but the cause of the buzzing is the low voltage feed going into the relay

It sounds like one of your units is dragging the feed voltage down that is going into this relay, check the actual voltage going in the switching terminal on the relay, with and with out the chatter

This wont cure it but it will give you some idea what is causing it, maybe a bad earth or overstretched live connections on


have fun :D

[stratie]

Cheers kev, i'll give it ago.
Oh one more thing, my horn only works when the engine is running?

[hobbit]

probably only connected through the ignition feed circuit, if you can identify the lead that goes through the fuse holder for the horn you can re-locate it onto a direct feed connection

[stratie]

You the man, cheers dude  :D

[bobtailed disco]

i had a similar prob on my series 2a
When rebuilding my series i put a new harness in and all was OK until i up graded the headlights and then.....

The indicator relay was humming
1 dim headlight,
side lights flashed when you put the indicators on,
and even more weird the horn would hum when you pressed the brake pedal
and all that was down bad earth on the headlights.
(the hole harness was earthed through the headlight which was fine until i up graded the headlight bulbs and burnt the earth wires through)

Rob

[Rich_P]

According to my Lightweight manual, that switch is for the infra red headlights.

[stratie]

Yep, all my LWT's have had that infra red light switch, but some clever b*gger wired up the spot lights to it.

[S188]

A dim headlight on one side will be poor earth on that side if its dim on main and dip. 

Belive it or not if you don't conect the earth to one headlamp bulb it'll still work at much reduiced rate as it'll find the earth in the other headlamp unit via the other beam.  Thus dip beam becomes dip+main+main wired in series.  You'll notice the earthed bulb apears to work perfectly and the other is really dim but you can't really tell both of the other beam are glowing too - look in the cab and you might even see the main warning lamp slightly on.