A Bit Of Help With Lights And Relays...

[Hayward691]

My plan is to have the dipped beam and fog lights come on with the high beam...
I made a loom using a twin output NO 5 pin relay...
the lay out was:

12v Fused Live
Earth
Signal from high beam
X2 output... 1 to dipped beam and 1 to fog light...

Using some info i got about which pin is which on the head light connector I wired it up and tested it...
Firstly, The fogs came on with dipped and off with high beam...
Wires must be wrong somewhere... but then i noticed that the 12v Live wire was not connected... but there was still power to the fog bulb...

I then removed one of the relays but both fogs still came on...
Proper confused!!!!

Does anyone know the best way to get this working? or is it a case of trial and error...
Many thanks

[Envoy CDX]

Why are you taking your signal from the highbeam only?

Also, the "high beam signal" was probably still giving power through it.

[planetc]

Show us your loom, or better still a diagram of it, you have something wrong obviously but I'm trying to get my head around what you have done?

[planetc]

Actually, reading this again it might even be the relay is an either/or 5 pin type.

[Envoy CDX]

Show us your loom, or better still a diagram of it, you have something wrong obviously but I'm trying to get my head around what you have done?

Thats the best way forward.

Actually, reading this again it might even be the relay is an either/or 5 pin type.

Not sure there.

[Hayward691]

Why are you taking your signal from the highbeam only?

Also, the "high beam signal" was probably still giving power through it.

Was taking the 'signal' from high beam so that when high beam was turned on it would give power to the coil in the relay thus activating the switch mech and giving power to the fog and dipped beam...
As you have said though, and what I'm now sure my problem is, The fog light is reciving power when the dipped beam is on in a kind of feedback manner...
The diagram I used... And should of paid more attention to as its very obvious now its said....


A simple solution would be use 2 4 pin STNO each side to seperate the feedback from the dipped and fog lights....
But I am trying to save room and wire...
The other type of relay with 2 12v live and 2 12v outputs might have been a better option...

Just to state... I am running Angel eyes with seperate bulbs for dipped and full beam...

[planetc]

Quick post on my lunch break, not put much thought in or tried it on paper, but I think it needs 3 relays, one triggered by the dip beam, one by the main and one by fog light feed, connect the fog and dip to one each and the main beam bulbs to the last one but trigger the other two relays with it too. When they are energised the bulbs you want light, when they are not they are open circuit with no back feeds.

[planetc]

You have to keep the live feeds separated for each set of bulbs or they'll back feed.

[Hayward691]

I went on to try a different plan... Seperate the power supllies...


It didnt work either...
Really not sure how...
I was taking the signal from the high beam for the 2 relays and a seperate power wire for each relay...

So... When the high beams where selected, The signal would power the relays coil, causing the 12v Live to pass through to the dipped beam and fog light...
I first tested it before conecting the fogas and everything worked fine... Almost... Selected high beam and dipped beam came on... But I only had power conected to 1 side of the car... The relay on the passanger side had no power running to it... But the dipped beam came on with the high beam :/
Hooked up the other relay to battery and tested again... As thought no change... All good then... No fires... lol

Then... I connected the fogs up to the respective relay but didnt add power to their relay... they came on with the dipped beam... On a seperate relay this time... With no power...
I have NO relay in my front fog socket either... Just been swapping from the horn...

So I thought I may aswel put power into them... Tried just one and both sides were on with dipped... Switched to high beam and they stayed on and dipped came on as they were meant to...
Really baffeled... Thinks I might just stick to dipped with High beam and leave the fogs out of it unless there is an easy solution LOL

[planetc]

I can't really understand that lot, but looking at your diagram, if you add a relay to control main beam, connected in the same way then you should suffer no back feeds as each bulb would be on a separate circuit and when the relays are open there is no path.

[planetc]

Separate supply won't make much difference, they all become common at the battery anyway. It's the bulb side of the relays you need to keep separate.

[Robsey]

Here you go, from my other thread...

see if this helps.
viewtopic.php?f=15&t=13343&p=137369#p137369

in this instance - reverse wired 5-pin flip-flop relays are your friend