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Model specific boards => Golf mk4 => Topic started by: jonrandom on 07 March 2012, 13:13

Title: How do you wire things so they turn on and off with the ignition?
Post by: jonrandom on 07 March 2012, 13:13
Ive got a electronic boost controller and aquamist wired up to the battery but this would mean that they would stay on all the time even if the car is not running.

I was going to just put a 12v switch in the circucit so I could turn them off but is there any way to wire them so they switch on and off with the ignition?
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: navmk4gti on 07 March 2012, 13:32
Wire it to your headlight switch
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: jonrandom on 07 March 2012, 13:47
I dont know much about electrics so can you expand on that?

So does that mean they will turn on when I turn the lights on or ignition on and how do you wire them to the lights?

Cheers
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: navmk4gti on 07 March 2012, 13:52
Im sure there ignitiOn wire on headlight swith.. Or u can wire up so only comes on when your lights are on.. This might help http://www.golfgtiforum.co.uk/index.php?topic=220652.0 (http://www.golfgtiforum.co.uk/index.php?topic=220652.0)
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: Wayne on 07 March 2012, 13:57
Easy enough to sort, pull the light switch out and use a test lamp to find the switched live.
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: jonrandom on 07 March 2012, 14:21
Cheers lads should be able to sort this now  :smiley:
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: 16valver dan on 08 March 2012, 14:37
if not i wire stuff like that into ciggy lighter as thats an ignition based circuit
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: Wayne on 08 March 2012, 21:55
if not i wire stuff like that into ciggy lighter as thats an ignition based circuit

I would be carefull with that, it does not like a lot of extra load.
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: 16valver dan on 08 March 2012, 23:37
true normally i just wire sumfin like a interior light in rear or summit to it
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: Big Tone on 09 March 2012, 06:40
Under the steering wheel, there are two terminals, one yellow, one red, one is switched live, one is permanent, dont know which Is which.

For a decent connection, wire into there.
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: jonrandom on 09 March 2012, 07:14
Under the steering wheel, there are two terminals, one yellow, one red, one is switched live, one is permanent, dont know which Is which.

For a decent connection, wire into there.

Ok nice one will have a look at the wkend if I can dig out a voltmeter.  :smiley:
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: Big Tone on 09 March 2012, 08:04
Under the steering wheel, there are two terminals, one yellow, one red, one is switched live, one is permanent, dont know which Is which.

For a decent connection, wire into there.

Ok nice one will have a look at the wkend if I can dig out a voltmeter.  :smiley:

good stuff, plus you also have an earth terminal down there, what you wiring in?
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: jonrandom on 09 March 2012, 10:28
Its the aquamist water meth injection and the hks evc 6 electronic boost controller
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: big stevie on 09 March 2012, 15:27
Under the steering wheel, there are two terminals, one yellow, one red, one is switched live, one is permanent, dont know which Is which.

For a decent connection, wire into there.

Ok nice one will have a look at the wkend if I can dig out a voltmeter.  :smiley:


think you will find red is a perminent live and the yellow is switched, but check first with meter first though. :smiley: :smiley: :smiley:
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: jonrandom on 09 March 2012, 16:22
Nice one mate you are a star  :smiley:
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: tokemk4gti.t on 09 March 2012, 20:41
under your steering wheel theres a cushty little SW/L if u remove the cover o think its x75 or something close easy peasy thats easiest place.
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: tshirt2k on 09 March 2012, 23:02
You dont just wire things in like that. That is asking for a fire to happen. Find a circuit that is large enough to take the load and make sure it is fused. Don't wire them to the same point either.
If you have to ask how to do this sort of thing, it probably not wise doing it.

Twisting and taping wires is asking for trouble. You should be crimping or even better, soldering and heat shrinking connections.
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: Big Tone on 09 March 2012, 23:10
You dont just wire things in like that. That is asking for a fire to happen. Find a circuit that is large enough to take the load and make sure it is fused. Don't wire them to the same point either.
If you have to ask how to do this sort of thing, it probably not wise doing it.

Twisting and taping wires is asking for trouble. You should be crimping or even better, soldering and heat shrinking connections.

Like what? Headlight switch or terminals under steering wheel?

Other way?
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: jonrandom on 10 March 2012, 11:39
You dont just wire things in like that. That is asking for a fire to happen. Find a circuit that is large enough to take the load and make sure it is fused. Don't wire them to the same point either.
If you have to ask how to do this sort of thing, it probably not wise doing it.

Twisting and taping wires is asking for trouble. You should be crimping or even better, soldering and heat shrinking connections.

How else are you suppose to learn if you do not do things yourself? I understand it could cause a fire if you just wire it them in anywhere which is why im asking advice from anyone that has done this sort of thing before. I will be soldering and insulating all connections I just needed advice on where.
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: tshirt2k on 10 March 2012, 20:03
You dont just wire things in like that. That is asking for a fire to happen. Find a circuit that is large enough to take the load and make sure it is fused. Don't wire them to the same point either.
If you have to ask how to do this sort of thing, it probably not wise doing it.

Twisting and taping wires is asking for trouble. You should be crimping or even better, soldering and heat shrinking connections.

How else are you suppose to learn if you do not do things yourself? I understand it could cause a fire if you just wire it them in anywhere which is why im asking advice from anyone that has done this sort of thing before. I will be soldering and insulating all connections I just needed advice on where.

You learn by reading. You dont just tap into any old circuit, and you should always have a fuse holder in line for protection.
Learn to read vw current flow diagrams to find the right wires and circuits. If possible use a separate earth to prevent ground loops etc.

Modern Vw wiring is usually wrapped in loom tape and can be hard to trace wiring. That's where diagrams come in handy. If you need a specific diagram I have them.
Title: Re: How do you wire things so they turn on and off with the ignition?
Post by: tokemk4gti.t on 10 March 2012, 20:46
lol time of the month i think haha  :laugh: