negative switching

[mav]

i have an 02 outback and im sooo confused! almost going to pay someone to wire my lights up for me lol https://www.outerlimits4x4.com/ftopic176331.php i found this link to negative switching wiring, but im still confused, do i just wire the '86' into the negative of my high and low beam of my lights? and wire the '85' to the '30'? im gonna have a go at it on th weekend and see how i go

to the high beam i have a green and black wire
to the low beam i have a red and black wire, both blacks are together

 

[nipper]

Lets back up a second. Do you want your driving lights to have the potential to come on with high beams or your low beams?


Negative switching is not a big deal, it just means the switch is after the load, not before. It takes the load off the switch contacts.


nipper

 

[eden]

ok join on to the green wire and run that back to a switch inside the car, then from that switch to the coil of the relay. join on to the black wire and take that straight to the coil of the relay. connect the lights positive to the normally open of the relay

 

[mav]

Lets back up a second. Do you want your driving lights to have the potential to come on with high beams or your low beams?


Negative switching is not a big deal, it just means the switch is after the load, not before. It takes the load off the switch contacts.


nipper

yeh i wanna make them legal, i wired them up yesty but the could come on when the car was off, but it was like the because i had 12voltt goin through the relay at all times,

 

[eden]

yeh i wanna make them legal, i wired them up yesty but the could come on when the car was off, but it was like the because i had 12voltt goin through the relay at all times,

thats because you wired a positive to the coil of the relay. use the black wire behind your head light.

 

[mav]

yep, that was next plan, i packed evrythin up when i thought of it, so im just gonna wait till i make the lightbar next WE then ill do it all at once, thanks for the help:ebiggrin:

 

[El_Freddo]

Here's the diagram I drew on the computer to explain it to others - I still refer to it when I wire in lights on negatively switched vehicles:

^ Read it carefully - I had a guy read it wrong who then went off on a massive tangent about it when all the information was already there...

Good luck with it!

Cheers

Bennie

 

[dicknose]

Negative switching is not a big deal, it just means the switch is after the load, not before. It takes the load off the switch contacts.

It doesnt make any difference to the switch contacts - the "load" on them is the same. Anything in series (like a switch and the device being switched) - it doesnt make any difference to the current which order they are in.

The point is more, if other devices are switched on negative and you want to piggyback then you need to do the same (well its easier!)

 

[eden]

It doesnt make any difference to the switch contacts - the "load" on them is the same. Anything in series (like a switch and the device being switched) - it doesnt make any difference to the current which order they are in.

The point is more, if other devices are switched on negative and you want to piggyback then you need to do the same (well its easier!)

this is correct. the return current is the same. just make sure the override switch you use is rated higher (in AMPS) than the load of the lights.
to find the I (AMPS) is POWER (Watts) DIVIDED BY VOLTS

 

[just_bj]

Thanks for diagram El Freddo - It makes it clear now (at least to me!)

 

[mr turbo]

Thanks for diagram El Freddo - It makes it clear now (at least to me!)

Me too.
I must make a copy of it for myself for later, as you never know when it will come in handy (especially for dopes like me) :ebiggrin:

Regards
Mr Turbo

 

[El_Freddo]

No worries Just BJ and Mr Turbo! I create these things for my reference and I'm more than happy to share them - even if they look like a 5 year old's drawing :lol:

All the best with your wiring!

Cheers

Bennie

 

[mr turbo]

even if they look like a 5 year old's drawing :lol:

No worries mate, as they say, a picture tells a thousand words.
I've seen drawings (& paintings) at art galleries that look like they were done by 5 year olds & they're worth millions of $$$. :lol:

Regards
Mr Turbo

 

[dicknose]

No worries Just BJ and Mr Turbo! I create these things for my reference and I'm more than happy to share them - even if they look like a 5 year old's drawing :lol:

Show me a decent original engineers drawing that doesnt look like it was done by a 5 year old!