Mk 4 Headunit help.

urz · Post by **urz** » Mon Apr 18, 2005 5:15 pm

(I searched for this and couldn't really find what i was looking for)

When ever i take the keys out of the ignition the headunit forgets all the presets and spits the cd when i put the key in the ignition. It is obviously not wired correctly, does any know how to over come this?

Thanks.

ste mk1lx · Post by **ste mk1lx** » Mon Apr 18, 2005 5:48 pm

if it's an aftermarket head unit you need an adaptor loom available from Halfords and other motoring store's HTH

carmadaaron · Post by **carmadaaron** » Mon Apr 18, 2005 6:09 pm

yes, u need an ISO connector from halfords Â£13.49

urz · Post by **urz** » Tue Apr 19, 2005 5:37 pm

Thanks. I just brought one but one end of the iso doesn't fit into the cd player (sony). Do i need another lead that comes from the cd player and fits into the iso?

carmadaaron · Post by **carmadaaron** » Tue Apr 19, 2005 6:41 pm

it should fit on, as it is ISO...

remember its male-female plug.... not male-male

hope u know what i mean

GroovyCarrot · Post by **GroovyCarrot** » Tue Apr 19, 2005 8:02 pm

I believe all you need to do is switch over the 12v permanent and the 12v ignition wires. It's what I had to do in mine, I think it's just a VW thing that they have to be awkward and reverse a bit of their wiring.

http://www.installdr.com/Harnesses/VW-Wiring.pdf
^ Radio wiring diagram, very, very useful. You want to swap over wires L and O.

cruisin_chris · Post by **cruisin_chris** » Wed Apr 20, 2005 9:09 pm

also needed this, dnt really wana pay for adapter that just swaps the wires when i can do it myself now, thanks for guide groovycarrot,