GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: Bushboy on 28 May 2007, 22:53
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Hullo,
First post here and im sure it wont be my last.
Just bought a nice 1990 MK2 Golf GTI 8v and having a little trouble getting my JVC aftermarket headunit to work from the Golf ISO.
Im basicly getting no power atall on the HU. Ive run a few searches on here and come to the conclusion that the Golf ISO isnt a standard ISO layout and so isnt likely to work.
Can anyone please tell me the colours for the wires as bellow :
12v constant
12v Switched
GND
Ilumination (if there is a wire)
Im guessing red is 12v switched? or constant maybe. and is brown, GND? Either way, im getting no power with or without the ignition on :smiley:
Any help woul be greatly appreciated :cool: Thanks!
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Red should be constant 12v, brown should be earth.
There is no switched 12v or illumination wires. You would have to wire these in yourself. It can be done, have a search on here as i'm sure someone has done it in the past.
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HTH, Garfay.
(http://www.garfayliu.com/cars/Image1.jpg)
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Thanks for that diagram! Will hopefully come in very useful!
Still confused as it seems the 12v and GND are correct.. may be that they are backwards though, will investigate after work. There are a number of other wires on the block though so I need to check what they are aswell :smiley:
THanks!
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are u sure you just dont need a harness adapter? im not upto much on stereo wiring but im pretty sure mine has a harness adapter
(http://i2.ebayimg.com/04/i/000/7f/0d/a699_1_sbl.JPG)
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Have you checked all fuses? Ie in the fuse box and also the inline fuse on the live feed.
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Trouble is that they aren't all going to be the same colours on different years etc. Why don't you cut the ISO off your Golf, get a voltmeter, find the constant, switched and earth, then just figure out the speakers and bullet crimp them in?
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Speakers arent a problem. Im planning on running them off amps in the future anyway so the standard speaker wiring is obsolete.
I looked at getting a wiring adapter as pictured but decided its nothing I cant just rewire anyway. Im going to investigate later and see what happens :smiley: Cant be a dodgy fuse/wiring as the HU i took out was working perfectly
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You have your perm 12v???
I made my own ignition live, piggy backed off the fan switch - soldered and shrink wrapped - not those pesky blue clip on thingyies (word???)!
Then I bullet crimped this new ignition live into the head unit harness.
Would take photos, but I can't be @rsed pulling it all back out :rolleyes: :rolleyes: :rolleyes:
Get your multimeter out :grin: :grin: :grin:
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got it working :smiley:
The 12v plus on the golf ISO was connecting to the 12v switched on the standard ISO and so as far as the HU was concerned, it wasnt getting a 12v constant. Ive just bridged the 12v switched and 12vconstant on the HU ISO an its all fine with a perminent memory and constant feed now.
My golf also has an illumination wire (blue.grey) and another wire which i cant work out. its yellow with white stripe... any ideas?
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if you've got perm live to both, then it won't switch off with ignition???
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No it wont. But it turns off when I remove the facia, which i never leave in the car, so no probs with it not turning off. :smiley:
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The yellow and white wire was the ignition live on mine, have an alpine unit in and had to switch over the live and ignition live to make it work, otherwise it was powering up all the time.
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hmmm might give that a go then. Although i like it without the ignition switch as its useful not having to have the ignition on whenever you just want to listen to the radio etc.
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Just remember that if you use amps then they will always be powered up if you wire it like that, killed my battery on my bora cause I had a HU in which did not use the ignition live. Slowly drained it because the amp thought the radio was on (unless you wire your amps to the ignition live rather than the radio remote turn on wire of course)
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Must have been the HU. Whenever ive wired them to the HU remote wire, the amps turn on and off with the HU regardless of whether the ignition remains on or not. The HU shouldnt still be telling the amps its turned on when its not :undecided:
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yellow with white is NOT ignition live, its speed sensitive volume adjustment, done nothing on 99% of headunits :)
I believe this was part of the expensive aktiv speaker system, either that or VW supplied headunits make use of it.
As for ign live only the very late MK2s got it, they had a red/brown 'key in ignition' feed :cool:
Any 90spec MK2 can have this retro fitted, you have to add the missing pin into the ignition switch plug (Pin 'S' or 'SU') and run it to the headunit.
On a pre-90 MK2 ign live is easy to set up, drop the fusebox and you'll see 2 groups of spare spade connectors, one side live, the other ignition live. Run a wire from there, but check the spades with a multimeter as some are not hooked up :)