Can some bright spark please help me I am trying to wire a set of driving lights into ma Toyota Landcruiser for a mate with out much success, have relay fitted as per instructions , tapped into high beam circuit . works when attached to battery but can not get them to work as per instructions

Hodgo

What's not working?

Assuming 4 pin relay, wire:

Pin 30 to +ve battery via a fuse.
Pin 87 to the lights, and the other side of the lights to earth (or back to the battery -ve if you're worried about finding a good ground).
Pin 85 of the relay to earth (Easiest to do this via the mouting screw if the relay is on a metal wing or similar)
Pin 86 to the high beam feed on the lights or fusebox, via a dash switch if you don't want them on with high beam all the time.

What have you done different?

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Jeff

1994 Defender 300TDi 110 - my toy
2004 Disco 2 TD5 - sold when we emigrated here.
2007 Disco 3 V6 SE - the wife's (So I'm told!)

Right on a relay you have two seperate sections - the activation terminals and the switching terminals - blown if I can remember the numbers - but


Signal from high beam goes to coil (activation) terminal - the opposite goes to earth.

Live from the battery goes (via fuse) to the dead side of the switch terminals - and then from the live side of the switch terminals run to the driving lamps - then from the lamps to earth

I'll do a basic sketch and post it

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'96 Disco 1 V8 - Sadly Rolled
2002 Disco II V8 - happy as larry

very basic sketch

Attached Files

scan0003.pdf (251.9 KB, 9 views)

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'96 Disco 1 V8 - Sadly Rolled
2002 Disco II V8 - happy as larry

On a landcruiser you have to earth the relay through the headlight circuit rather than just to ground.

Has something to do with the grounding in the engine bay.

So basically say on an 80 series.....

85 to high beam positive feed
86 to headlight negative feed
87 to positive feed + Fuse + Relay(to protect switch contacts) + Switch
30 to Driving lights positive

Driving light negative goes to battery not to body.

Other cars such as Mitsubishi Tritons and Pajero's are the same.

This works Ive just recently done a set on an 80 series.

If you mount it all at the battery tray on the left side it is all easilly accessable to the left headlight wiring and you only have to run a wire feed to the switch.

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I know this post has upset at least 1 of the people reading it so my heart felt appology goes out and I hope that you will forgive my insensitivity and will not hold it against me.

Feel free to put me in your ignor list

Aah,Toyotas, don't they mostly switch earth on their lamps?? I had this problem when wiring driving lamps to a toyota coaster bus once. Toyotas idea was to reduce the contact wear in the switches by switching the earth side. This means that they are effectively wired in reverse to the LR. The switch etc has constant supply, and earth is the switching side.


Confusing isn't it, but when you see it / actually wire it it makes sense. I think.

JC

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MY RR; '92 Sherwood, 4BD1 turbo I/C, MIL LT95, 33 's, 140L tank, rear sals, Maxi axles,LF 240's, Barrett HF
HER RR; '93 Vogue LSE, intended mods- 300Tdi
VKS 737 'Mobile 0176'

McRover has it!!!

thanks for the info, I had forgotten the wiring sequence, I'll actually write it down this time!!

JC

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MY RR; '92 Sherwood, 4BD1 turbo I/C, MIL LT95, 33 's, 140L tank, rear sals, Maxi axles,LF 240's, Barrett HF
HER RR; '93 Vogue LSE, intended mods- 300Tdi
VKS 737 'Mobile 0176'

There you go, thats the reason, if you wire it how I posted you wont have a problem.

__________________
I know this post has upset at least 1 of the people reading it so my heart felt appology goes out and I hope that you will forgive my insensitivity and will not hold it against me.

Feel free to put me in your ignor list

If that is the case then the attached would apply - well done Justin

Attached Files

scan0004.pdf (94.5 KB, 9 views)

__________________
'96 Disco 1 V8 - Sadly Rolled
2002 Disco II V8 - happy as larry

See, We aim to please here at AULRO.

Even the Toyota owners get tech help here!!

JC

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MY RR; '92 Sherwood, 4BD1 turbo I/C, MIL LT95, 33 's, 140L tank, rear sals, Maxi axles,LF 240's, Barrett HF
HER RR; '93 Vogue LSE, intended mods- 300Tdi
VKS 737 'Mobile 0176'